Definitely take it in to a shop, have it aligned, and have them look it over so you know your work is correct.
Me and one other person installed ZL1 springs on my car in 3 - 4 hours (maybe less??..can't remember) and I had zero issues after install. Got it aligned a short time later.
Praise the Lowered!!
2016 Camaro 1SS - 8-speed - NPP - Black bowties
2010 Camaro 1LT V6 (Sold. I will miss her!)