Mind you, I use effects lightly.
Phaser, lightly, works great for Scarlet.
Auto/Wah, set lightly, works great for Estimated.
I can definately hear a filter effects on Bobby's guitar during these two songs. What he exactly used, I cannot be certain. However, the trick to my replcating his tones start with a well dialed in amp and very light effects.
Poweramps - in that era, Bob used a Godzilla 1000W solid state amp. I've been using TubeWorks guitar poweramps for years now with incredible results. I own 2, picked up the first for $225, the second for $70. It all depends how the used market is.
Speakers, your call. I am in love with Eminence Cannibas Rex speakers. A pair of these in a closed back 2x12 cab and you will be set!