I am similar height/waist and was in the same boat trying to figure out seats. I unfortunately was under a time constraint moving the car around so I ended up with a seat that is a tighter fit.
Pole Position - What I would have picked for comfort, size, price but I could not wait in my case. Track focus>look comfort, they look cool in Jersey red (unavailable from Recaro going on 2 years now) but black is okay but boring/ugly. Leather is nicer but to me (no AC) stupid for a track seat, side support is medium but tolerable for a street driven car.
Cobra Suzuka - Can be customized to match your FD interior, premium feel with almost OEM look I think. Less side support, but still enough for a street car to not look like a contortionist getting in/out. Comfortable and fits FD with lots of fabric options - it can get expensive quick.
Sparco qrt - Functional, if that is the only goal then function>price/look. If I went this route, the seat would be off to be re-upholstery shop first chance even if in leather. Good side support, will be a bit tight. I find it ugly as hell but that could be just me.
Tillet b5 - Your pockets seem to be overflowing with cash mcdollars, looks cool with all the style points. Pretty lacking in side support, enjoy sliding every corner like a stock seat.
I setup a sheet to compare dimensions including harness heights, they are not all the same. If I was going to change seats again... which I hopefully wont have to do again, I'd consider them in the order above. From what I remember about your build, the Cobra would be my choice but calling them to get it customized would be the way to do it. Alcantara center, custom matched stitching, harness hardware and there is leather and padding options. Their website sucks to show options.
Hope that helps.