First, if you plan on a computer-based setup, you'll need a recording interface.
The
Line6 TonePort UX2 would serve your needs well.
A solid DI is essential for recording bass:
A forum search on the MXR M-80 or Sansamp BDDI will turn up some good reviews...
ART, PreSonus, and others also make good, bass friendly DI's...
A good kick drum mic will come in handy if you planned on micing your cabs yourself (as opposed to DI)
The
AKG D 22 is a good low-priced option.
(Keep in mind that, if you plan on using a mic, you'll need
Stands and
Cables as well.)
The above mentioned RC-50XL is the best of the big looper options...
Keep in mind also that a home recording setup can be as complicated or as simple as you want it, but also that spending more money on better equipment up front is better long term...
Just some thoughts...