Personally, I would not spend the money for the CPU upgrade. There's only about a
10-17% bump in performance between the two. Plus, you'd lose the ability to revert back to integrated gfx should the card ever conk out on you... or you decide to sell the PC and keep the gfx card for another build. I'd put the money towards getting the fastest 1050 Ti (w/6-pin) and a good 400W-450W PSU.
But if you do decide to go the CPU upgrade route, I don't think you have anything to worry about the motherboard not handling a 95W CPU just because your current APU is a 65W. I've never seen a FM2+ board that was rated below 95W. My main concern would be the BIOS recognizing the new CPU. They are different processor cores. You would be going from Kaveri to Godavari cores.