I'm really liking the Ernie ball cobalts. I use the 55-110 gauge, they're a little bright for my tastes at first, but once you give em a bit to break in, they're pretty darn great.
Hartke lh500- $350
Find a decent 8ohm 410 locally.
Find a sansamp pedal of some kind (bass driver, vt bass, gt2) and you are good to go. A power amp with a pre amp is a good choice as well