What's a good number of gorges to have in a typical game? I know if you have too many gorges your offense is crap and too little your upgrade speed is also crap. For those who have already played, what's normally a good number?

For teams of 1 to 5 players, I wouldnt recommend having more than 1 gorge. For teams 6 to 10, you can get by with 1 gorge, but 2 helps. For teams 11 to 16, 2 or 3 gorges. There are exceptions and you CAN also choose the chancey route and have many gorges try to nab as many rp towers as possible right off, but that kind of maneuver works only rarely. You'll get a feel for it by playing. I dont think ANY alien team should ever have over 4 gorges in any situation. There are exceptions, such as a prolonged Marine Start siege which requires builders to heal and provide a staging area, but the above guidelines are for buildings who will be pursuing upgrades and hives.  

well thats good cuz some people enjoy being the workers (technicians)and a lot more like being brute strenght and is there a limit to classes or is it inputed manually by servers