Save the money from buying the gadgets and use it for lessons... to help hitting straight and avoiding the trees... or for some new clubs, right Joe???

It's ALWAYS best to get properly fit for your clubs. 

The shafts that you mentioned are going to be pretty similar to the Project X you have. The R.I.P. a 70 is a good shaft, as well as the Motore Speeder VC 7.2.

Do you have any certified Titleist…

I don't understand where the mathematics question is in this statement (nor the ball speed at "mid 4000", unless you are a super human being to be able to make a golf ball travel at 4000 mph, in which case it wouldn't matter what drive you had as you…