The earlier Sinar Norma gives you nearly the rigidity of a P, but is only slightly heavier than an F2, with about the same overall bulk or footprint. It is prior to their "yaw-free" feature. No big deal unless you primarily do tabletop studio photography, where yaw-free is a minor convenience. Original Norma tapered bellows are way nicer and more versatile than the subsequent 4X5 box bellows, if you find one still in good condition. I landed two of them in mint condition; and just like later bellows, they're fully interchangeable with newer Sinar cameras too.
Besides the extra weight and clumsiness needing an especially solid tripod support, P's have gearing everywhere, a luxury in the studio, but easy to get grit and dust into in the field, causing potential maintenance issues.
And as for fresnels - I've always hated them. One more thing to leave back in the studio. Worst of all, sometimes they cause condensation between them and the ground glass, for those who realize "landscape" involves weather too. But that's a subsidiary topic.
"C" Sinar cameras are hybrid : and F-style front end, but a P-style rear standard. But how effectively that combination works depends on the specific components, which differ. It could be a rather rigid front standard, or a relatively weak one relative to the application.
