Hi! Welcome to the PASBL, hope you find some fun here and stick around. A couple things: You've only got 6 pokemon in your squad so far, which means that people with larger squads will be able to pick around you and plan better. I'd advise you bump up your total starting pokemon to the allowed 15; don't worry if you decide you don't like them, at level 1 you're able to change your squad as and when you like without having to level them up, since you're at the lowest level any way.
Also, I've seen that you want your first match to be Doubles/Realistic. I'd advise against both for your first battle anyway, but bare in mind you can have up to 4 battles across both forums (If you haven't heard about UPN you can find it here). Realistic battles can only be picked up by B grade or higher Referee's at the current time, so you have less chance of someone picking it up. It can also leave your pokemon with injuries that stop them being used for a number of battles proceeding (up to 3 usually), and baring in mind you only have 6 pokemon currently, it would severely limit your squad. Doubles is also slightly more complex, but not as much as realistic.
I'd advise a 3v3 singles slapstick as your first battle, and see where everything goes, although the choice is up to you obviously. Either way, hope you enjoy your time here!