I've gone to rare spares and had them plastic mold a 90 degree corner into the door seals at a measured interval that should have the ends meet at the middle of the door pillar.
I've not yet had a chance to fit them to confirm.
The coup seals does not traverse around the side windows so corners are not needed but on the 2+2 you will.
If you go the Clark rubber option and don't have the pre-foremd 90 deg at the rear of the door / quarter window I think you'll have the seal continue to deviate from the curve despite the adhesion attempts. The doors also need to be slammed to shut.
I've all but given up on the sportage option, just didn't find it by the meter and the kit was more $ / risk than going full custom.
Rare spares in Adelaide should still have the measurements I gave them for my 2+ but remember I've not tested mine yet. The lads at rare spares went over and beyond with this task I have had some dealings with other interstate stores that were a little average but these guys really cared.