Welcome @WillMidz
Just to throw my tuppence in, and echo what everyone has said, great sport, very addictive, cqb really is a lot of fun and will leave you scarred. I have some on my right forearm from a couple of indoor games last June/July. If you're happy to wear them like a badge of honour, you'll be good. Just remember that chicks dig scars!
On the G&G front, I have the CM16 12" Wildhog and love it more than some of my children but had to replace the trigger unit as the contacts burned out. From the online drivel I've read, this seems to be a known problem with G&Gs. I fitted an upgraded unit that is a massive improvement and has different settings that you can play with. It was as easy swap but it does mean taking the gearbox apart. Again, not difficult by any standards but some don't want to do it.
Where is your first game?