Looking good!
FYI to make that oil cooler work properly you want to maximize air flow through it, as it will naturally want to flow around it instead. The Porsche shroud works well for this, and our friend Jonnny042 found a better/cheaper alternative to the factory gasket - which costs a ridiculous $160 for a few feet of foam - in his perfectly executed install. He also made some brackets to solidly attach the same Spal fan you are using (which is great BTW), better than those through the radiator zip ties in my experience:
https://forums.pelicanparts.com/porsche-911-technical-forum/979976-project-heavy-metal-all-steel-classic-remastered-24.html#post10729537
If you were planning something like that anyway, carry on!
Cheers,
Lukas