Couple newb questions on my f150

[smokinsrt]

I have the edge evo right now, a banks intake, and getting ready to purchase the banks single monster exhaust. I'm wanting to send my edge in to get programed and I'm wanting to just ask a few questions. 87 octane is fine for the performance mode if you request it correct? Downloading pegasus is just for further down loads? Lastly I'm running a little bigger tire than stock and was never able to get the edge to save my tire size is that something that can be done when i send it in? How much can that be hurting it not being exactly correct? Thanks for the help on my newb questions, I wanna send it in now before I get my exhaust so I'm ready when i get it.