RS11 are 15mm internal...
CSB alert but we're about the same weight and I can only run 23c on my 90's Look. I originally had Dura Ace C24 on it, but I have borrowed my GF hand built wheels (32 spokes, Halo Devaura / Kinlin XR31 on Novatec) and was quite surprised by how good they were. While they are noticeably heavier when starting at the lights, they are very stiff and actually quite aero with a 23c tyre on, so keep up speed well. The extra internal width helps with comfort, and give the tyre a nice profile too.
tl;dr I'd speak to a wheelbuilder and get something on Kinlin XR31 rims if I were you.
RS11 are 15mm internal...
CSB alert but we're about the same weight and I can only run 23c on my 90's Look. I originally had Dura Ace C24 on it, but I have borrowed my GF hand built wheels (32 spokes, Halo Devaura / Kinlin XR31 on Novatec) and was quite surprised by how good they were. While they are noticeably heavier when starting at the lights, they are very stiff and actually quite aero with a 23c tyre on, so keep up speed well. The extra internal width helps with comfort, and give the tyre a nice profile too.
tl;dr I'd speak to a wheelbuilder and get something on Kinlin XR31 rims if I were you.