That thick part of the string shouldn't make it round the peg... ideally.
Check string length on packaging, not especially for thru body or you got a 32" scale length?
Adagio Flats go a little round the peg on my TBird.
And on my HB P Modder
All about the £€$...
You mentioned Toneriders (I was going to mention Toneriders and Kent Armstrong)
Have you seen or heard about the Tonerider Duke?
https://tonerider.com/products/the-duke
Ibanez should make an SR300 Passive, with a Single P
Ultra Sleek 5 Ply Jazz Nut Neck, 24 Fret, Worn Pebble Comfort Body, Single P Pickup, mine is wearing a Kent Armstrong Hot Vintage
@Andyjr1515 waived his hands over the body...
Mmm... Trying to decide on the Wiring Option.
A250k Vol and B250k 0.047u Tone
Tone across the Input (from Pickup) or Tone across the Output (from Vol, to Jack?
https://www.premierguitar.com/diy/mod-garage/tone-pot-wiring
Fed up sanding...
1st Tru-Oil applied with 240 Wet & Dry
2nd will be with 320, got some old used 1200 for a knock before wax applied Scotch Brite Side of a sponge.