Congratulations on the new job. It's a tough market out there. Plenty of devs have full time jobs and make games on the side. Just don't let a project consume you where every spare moment is spent getting the game done.
With Dropbox you open the folder and delete files just like any other windows files. Dropbox backs them up for 30 days so that if someone accidently deletes something you can restore it.
Right click the systray icon and select open dropbox folder.
I stumbled across this recently at gamesquad forums. If you ever enjoyed A&A give this a try. There are 2 AI opponent versions and a 3 being worked on.