Well, with 10 - 15 h/week from august, the result is very impressive!
I'm working on a space shooter myself, it's only 2d but multiplayer on internet, started a tiny bit last christmas... but on avg I can only put in like 4-8 hours a week... and sometimes it goes several weeks when I don't get anything done...
Anyways, it's a lot of fun, and soon I hope to get it up for more testing than just my local friends...
After I'm finished with that I might try something 3d... but we're expecting our 2nd child... so come july I'll probably not have any time at all for game programming...
I'd really like to try out jpct... the results are looking really good.