Agreed, the Firepod is an excellent device. However, you do not record the files to the firepod, you will need a second HDD for that. I recommend a FW HDD, since you say you will be transferring to a laptop.
Form the bass, you can plug directly in, or go through a DI, which will yield a better quality sound if you use a good quality direct box.
For guitar, a trusty Shure SM57 is a great choice to mic it with.
For vocals, on the cheap, the Studio Projects B1 is a nice mic for $100.
Best of luck. BTW, you might want to watch your local Craigslist musical instruments listings for a used Firebox, and save yourself a little money. You can often pick them up for $100 there.