I am 6'2" with a 34" inseam and am running recaro Profi XL seats that are floor mounted and I ran my belts wrapped to the factory harness bar. The angles worked for me which made it simpler.
I ran my seat belt receptacle through the seat hole, otherwise I found that the seat belt didn't really fit tight against my body if the receptacle was on the outside.
That seat belt receptacle inner hardware, that is a tight fit ain't it
That was a tricky part of the installation for me as well...
Here is a guide with some details if you haven't seen it before:
https://www.schrothracing.com/doc-share/schroth_installation_checklist.pdf