Is it time for the discussion of Chuck's overdub technique, and perhaps studio/gear?
Ampex 3-track mono tape recorder? Don't know, I'm guessing here.
From Johnny B Goode seems he'd play an intro and then straight rhythm till the end of the bed tracks.
Mabellene, earlier, seems to be one guitar...
Amp maybe but guitar speakers... idea is that bass stresses the g speaker voice coil, causing it to lose impedance more and more as it heats up. Your amp will "think" it is running into less and less ohms, then an open short.
FWIW a BluesJr hooked to a bass speaker sounds kind of ok.
How big is your room/playing area? BJ unless way low on MV is too loud for a condo/apt.
How often do you change strings? IME BJ likes one-year-old pure nickel strings like D'Addario.
How high are your pickups? Maybe too high. Check Ask Zac's setup video.
From a cursory look at the market, it seems easier to get a body made in Canada than a neck miC.
And domestic sourcing saves you exchange and duty, poss even shipping.
As someone said above, keeping the stock 52HR body allows you an eventual resale option.
I think you should go...