I'm into maximizing the rim internal width and going hookless for lower tire pressure and a better ride. I have 303s wheels that I bought over a year ago. They're fine, except in gusty winds. I decided to go with shallower 29mm depth and wider 25mm hookless rims that require no rim tape, from BTLOS. My last pair with extra light rims and Bitex 312 hubs came in at 1340 grams and cost about $800. They offer rims depths of up to 44mm, with the 25mm IW. Right now, build times are longer than usual. My first set took 30 days to deliver and the last took 42 days.
With a 25mm IW, 28mm tires are the narrowest tires that can be used and they'll measure around 31mm in width. ZIPP recommends 52/56psi for a 140lb rider.
https://btlos.com/ar-clincher-hook-l...arbon-wheelset