I have an 06 GX and bought the Ironman 4x4 performance 2-3" nitro-gas lift. I also bought JBA UCA. The ironman shock/struts and airbag delete all arrived, but the UCA's are going to be a little while. Unclear if it will be days, weeks or months. That in mind I also don't have a ton of time, just an afternoon here and there. I'm planning to do the UCA's at the same time as the fronts. That in mind, would it be dangerous to replace the rear shocks and coils now then wait a the couple weeks to do the fronts, once the UCA's arrive?