It sounds like you're looking to get a lot of work done at the same time. Our stage 3 package was specifically designed with street use and HPDE's in mind and is a fantastic package for those who don't mind a more aggressive ride with some adjustability built in.
That being said, you might want to look into our stage 2 package which includes the drop springs and the sway bars. The bars and springs were engineered to work together and still maintain excellent ride quality. For your application I think these will accomplish everything your looking for, without any trade offs in streetability. If after the install of the springs and sways you're still looking to address specific issues such as wheel hop, trailing arms or solid subframe bushings can be ordered then.
If you've got any questions let us know!