After a few walk ons, you'll know what you need to do
I would go research or better yet go try on some thermal/dual pane goggles and buy yourselves a decent set. Being able to actually see, will improve your experience 100%. Plus, who wants to wear the sweat of a 1000 men when renting a set of goggles?
After that, I would HOLD OFF buying the first gun that interest you. I would go ask about and ask politely if you can look at peoples markers when at a walkon. Most ballers would be happy to show you their prized possession
just rent guns for a couple of outings, and try to get an idea of which one you loved the feel of.