I had my Cave 8" RFT out the other day to view the Orion nebula with a classic Galoc 16.5mm. Huge field, - got batwings plus groups of bright start at 11 o'clock and 5 o'clock periphery of FOV. Kind of like the stitched view shown here...
My question for your restoration is whether you are going to stick with the original helical focuser?
It only handles 1.25 EP's and I have given some thought to switching to a 2.0 focuser like the one over at e Bay "Perfeclan 2-inch 1:10 Dual Speed Reflector Focuser for Newtonian Reflectors".
Otherwise, the best 1.25 options might seem to be
Panoptic 24mm 1.69 deg
TS Optics Expanse 22mm 1.69 deg
ES 69 Deg series 24mm 1.71 deg
Pentax SMC XW 20mm 1.51 deg (rumored to exist)
APM UltraFlat 24mm 1.71 deg
Baader Hyperion 24mm 1.82 deg
BST Flat Field 19mm 1.33 deg