As far as components go, I wouldn't suggest getting too many your first go around.
Go for the sonic maximizer, that won't hurt. But to tell you the truth, I'd go for the new pedal version, the
Sonic Stomp. Save a little loot and get basically the same thing, in easy to use pedal form.
I wouldn't suggest the 31 band eq, because any good preamp will already have one of these built in, so it is overkill.
I would focus on a good
power amp or head, a decent set of 2 x 12 cabs to run stereo, and a good preamp.
That will minimize having a lot of components, and maximize your results.
Trust me, I used to lug aroung a bunch of stuff, and it was a real pain in the ass. I finally settled on decent combo amps.
But the rack stuff is fun every once in a while.