i'd suggest playing with a rental marker first, if only to have a baseline for an appreciation of a better marker later. definitely get a good mask right off the bat, but i feel like if you use something like a tippmann 98 a few times, THEN you get a better gun....you'll really really love it and appreciate it. plus, itll give you a little time to try out a couple of different guns first. most people will at least let you try their gun out at the chrono or take a couple of shots while walking off the field. see what feels best in your hand, and when you pull the trigger.
Dye DM12, CCM T2, Tippmann TPX. my feedback