You don't need Coil overs with the QA1, it comes with spring perches. I swapped it out for the UPR kit with tubular A's and coil overs though. I wasn't fully happy with the QA1 because it tilted my motor too much to the Pass side and we had it fully adjusted.
I also like the coil overs with the UPR a lot better as well as the motor sits how it should. UPR is the best budget purchase IMO. I have hella speedbumps in my daily commute and not a single crack on any weld and the coating is holding up fine.