Well, you're running springs and struts, not coils. You get more a more dd friendly ride, but yes Tokico struts are very nice. My uncle run's d-specs on his mustang gt 350 build and they are impressive to say the least.
Personally, I wouldn't get the 1500 dollar package as you pay an extra 200 for receiving them completely assembled. You can either rent a spring compressor or buy one for about 50 bucks and build the same kit for about 1350.
If you click on the 600 or so dollar option, get the group n tophats, adjustment extenders, camber bolts for the rears, and I'd go with the yellows or spec-r springs for under 1,400.
So maybe it's closer to 100 bucks difference than buying the pre-assembled kit. That may be worth it.