Thanks for choosing a color
Polo, I think you need to take a step back from all of this. From my side of the internet, it appears that you are coming onto Greekchat with completely random questions and are just asking these things to ask them.
Consider that this site has been around for quite a while now (in internet years) and no one that I know of has ever started a thread inquiring as to whether they will have roommates. The reason for this is that 1) most of us don't go to your school; and 2) we have no earthly idea where you're going to end up or even whether you're going to receive a bid.
Without knowing those things, how do you expect an answer? You probably know, if you have friends in fraternities, that every single house on your campus has a different living arrangement. When you start talking to houses you're interested in rushing, this is a question to ask them (if living arrangement is important to you).
This question and many of your other questions are just not things you really should be asking here.
In the future, before you post a question, consider who will be able to answer you adequately... then consider whether you should be asking the question in the first place.
As an aside, you seem a bit too eager to get into a fraternity. If this sort of thing shows during rush, you're going to be lucky to get a bid. The over eagerness and over inquisitiveness are just a bit strange and off-putting.