Zarpoxx - Welcome!
Careful asking for opinions. You'll have all sorts of people like me spending your money
The Cheap & Easy (Easier) fix, to get that kick in the pants feeling it seems you're seeking is to change your rear end. ie: something over 3.50 and up to 4.11.
The "negative" is the car will be working at a higher rpm range whilst cruising, but if you're chasing a 7k RPM engine build you probably prefer that.
In terms of engines, if you are hell-bent on getting one done, and the budget allows, go get yourself a custom engine built as you want it from the beginning.
Band-aid fixing or part swapping the current engine may end up costing you more in the end, as you chase, swap and redo items to finally get want you wanted to begin with.
Good luck either way and enjoy