One little detail about that block.
I have that block for the 3080 ti, and the anounced measurements are for the "carbon fiber part" for some reason the outlet-inlet chrome piece is not included... this is causing me some problems, it´s just 15 mm or so, but is enough difference to wrck you in these kind of builds.
This is for the 3xxx series block, maybe this new one have the measuremens corectly written on the spec sheet.
looking forward to see what your next build will be.