If all you have is $2500 my advice is to not be in a hurry and wait for used parts to come up on this site. Stick to the bolt on stuff you can do yourself. You probably haven't seen my build thread but I have done nothing more than get a 1/2" taller upper ball joint with Global West control arms and a DSE sway bar up front. Still using stock subframe. I run NASA and NCRC Time Trials and do pretty decent. If you don't want to cut into your fender wells you can get a 255 up front on an 8" rim but I recommend a 275 with a 9.5" wheel with back space of 5.5". Same size wheel and back spacing for the rear. Get a Fays II watts link for the rear. This unit not only centers the differential but also allows you to adjust rear roll center. Then go to The Toyo RA-1 tires.
After that put in as much wheel time as you can. Buy a tire temp probe to dial in your alignment. Look into the Porterfield R4 brake pads before touching your brake system. You wont be disappointed.
Good luck moving forward
