We will start with the 195's. you do not need a lot of head to do what you want to do. I am sure the 195's have at least 2.02's. You could gasket match your heads an intake an that should be enough. Yes, they are on the big side. But porting them out will just make it worse. All you will be doing is handing them money.
The lower end is going to do ok with around 6000 rpm's. But, you need ARP bolts in the connecting rods. The lower end needs to be gone through an done right. Would be nice to balance the lower end.
All your parts need to work together or they will not compliment each other an will work against each other. That is why you need the right combination. I can not comment on anything else. Because you have not told us anything else about your engine.