#1
K here is the setup, tell me where to put the volume pedal idk...

wireless to overdrive, overdrive to mesa lonestar, *Effects loop* wah through TC G-Major *Effects return*, into Mesa Recto 2x12 cab.

I guess before the OD? Maybe in the effects loop? idk, lol
#2
between your overdrive and the mesa.
Fender American Deluxe Ash Stratocaster (2000)
Fender Classic Player 60's Stratocaster
Marshall JCM900 100w head & 4x12 cab

Korg DT-10 Tuner; Boss DD-3 Digital Delay; Jim Dunlop JH-1B Wah; Boss RT-20 Rotary Ensemble; MXR EVH Phase 90.