Being a Pre-Mi

So I'm feeling like now that I have been called to serve a mission in Brazil (even though I don't report until March which is around 4 months away) that technically right now I am a pre-mi. I feel like maybe I haven't been putting my focus where I should.
I haven't been necessarily spending my time as wisely as I should. I have four months. In these months I could really truly prepare myself for this mission. It is interesting how consumed my thoughts have become with temporary things dealing with social aspects. Instead of studying the scriptures I have been keeping a close eye on facebook (a social media) which isn't giving me the fulfillment promised to us through reading the scriptures.
If I can instead, keep my scriptures closer to me physically I may be able to spiritually draw even closer to the truthfulness of the gospel.
I guess its difficult to say certain things through a blog, because it isn't exactly a journal, but since I don't actually keep a journal- this is as close as its going to get. So I'm going to stop being vague and speak the way I feel. Because maybe some day I will be able to look back on what I have written and learn a little from it. If I stay completely vague it will be of no use to me.
So basically I have nanny jobs so I do keep busy, but then I will come home and relax, text a couple people and go on facebook. I do get out and do things,  (like I'm thinking of attending my ward volleyball more regularly) but I don't really spend very much time on spiritual matters.
I (of course) am attending church, saying my prayers, and doing what I feel to be right based on guidance from the spirit. But my scripture reading is random and for inconsistant periods of time. Also I tend to put activities before scripture reading. Another thing is that moving to a new place and everything it was important for me to meet people and make friends. The only problem with this is that sometimes I spend a lot of time thinking about guys. The reason for this is because, I like guys. Always have and always will. So its tricky because now I'm thinking that maybe I shouldn't want to go on dates or something. Even though they are really fun.
I do know some guys who are pre-mi's who decide not to serious date before their mission. But I guess they still go on dates for fun. So where exactly is the line between dating for fun, and dating someone you have feelings for. I mean if I am going on a mission (which I am) should I not go on dates because technically it "can't go anywhere?". But how can you even know if that is fully true? I mean there is always the chance that I could go on dates with someone now before my mission and then they could still be around after my mission. The chances I guess are slighter if they are RM's and everything and will be looking to get married (which is good and everything).
I guess I don't really see a problem with going on dates.
But then the more dates you go on the harder it would be to leave, especially if you do grow close to people.
Anywayyyssss those are just the thoughts that have been going through my mind.
So at first I was thinking maybe I will still go on dates as much as I want until a certain time: such as January, and then just go "cold turkey" and not go on any dates.
But then my mom gave the analogy of people who think they can drink as much as they want and then all of sudden stop. Then they probably will have withdrawals.
Seriously I probably shouldn't be thinking about guys at all, but really why not still spend time with guy friends? I guess there is the whole "guys and girls can't be friends" which may or may not be true.
OKay anyways the main reason I started writing this way that I started thinking that maybe I will try the technique of having set goals/ checklist of things to do each day.
The checklist I have thought of includes:

Journal (10)
scriptures (30)
Portuguese (30)
MTC prep (30)
Visa stuff (1 done)
Missionary Letters
Run/work out
Piano
Shower
I'm thinking that if I really start to use my time wisely I could actually get a whole lot of good things done each day. If I spend a certain amount of time studying the scriptures each day, as well as the Portuguese language (and other things) then first of all the time I have before my mission will be used very wisely in order to prepare me for a mission, as well as keep me busy and doing good things. I feel like if I do get these things done every day I will be more intune to the spirit, which will allow me to make even better choices. And then if I am getting these things done I don't see a problem with occasionally going on dates. Plus if I am meant to go on a mission I feel like it will work out, but if I meet someone I will of course pray about it and see what the Lord's will for me is. And if by some crazy chance it is to get married then that will be my mission.
So those are my thoughts.