nice, and good luck for when you do get a hosted a server. each player does not use much bandwidth at all (although im not sure of the exact amout). if your hosting a server for just your country, (based on a 26-player server) a 20Mbps connection will keep all broadband users pings easily under 50. if you want it to be international (for players from any country), 46Mbps if more than enough.
also a tip: if your wanting to run MTAmA with any script on the server 24/7, i would recommend using a really low power dedicated machine, like a 400MHz with 64MB RAM, Win98SE etc. i tried hosting Oli's script 24/7 on this PC once but with the 400w PSU it kinda doubled the electricity bill.