.Net's effects?

Soon, I am going to start devving my big forum idea, its a nice general idea, and i really plan to focus on it, and dev it like crazy, but Ive been having a hard time with a domain name, and I have one i like, but its a .net, (the .com is tooken, but it redircts to an entire different site, that has been outdated for years)

The .com Domain expires the 22nd of this month, but then when exactly will I be able to register it? 60 days? 90 days?

and the .Net is avaiable, and its 100% of a brandable word (Short, and semi made up)

Do you think just using a .net would effect anything?