Yeah, I'd say invest in SoW pots before going in on some Jboots.
As far as bags, Evil Eye is great but it also weighs 3.0, so make sure it's not counterproductive.
People kill both Brother Q and Z. Brother Z is probably easier to spawn though. You need at least a beefy group of 60's, including a Warrior with discs up. Jboot farmers probably need to wait 4 hours for Brother Z to despawn.
The Idol is NOT MQ'able, but the Code of Zan Fi is. However, the Code of Zan Fi is easy to get if you tag along in a Royals group in SolB. Pipe MQs are 2k for KC pipe/10k for Chardok pipe.
Haste item you could shoot for is
RBG which is 20k, every other upgrade is at least twice that amount or raid drops, etc.
Don't worry about increasing Dex for procs. It's only worth it for Warriors, really. The DD proc on the AC procs a lot even with mediocre Dex.
As a monk farming cash, I recommend anything that drops gems because weight, etc.
Also, in KC a lot of clicky gauntlets drop which are "Small" so they fit inside a Large Soiled Bag and they sell anywhere between 300p-500p.