You can't really figure out ahead of time how much each client will use in Bandwidth.If you want to run a server from your house get the most Upload that your DSL provider offers, if you can afford it.I ran a 8 man Sniper Only server for 5 months from my house with very little problems, but my U/L speed on dslreports.com is always hitting atleast 680.Also remember when your running a *ded* server from your house you won't be able to do any other D/L.The server will take up everything you need. If your thinking of spending an extra 40 to $75 to make your home DSL good enough to run a server then just order one from a good company.I go through
http://www.xgameservers.com now.I pay them $50 for 12 man room and get to use all my bandwidth here at home again.
Dean