Now, I'm no master mechanic by any means but uhhh, something is very, very, very wrong here. I have the EXACT same shocks and springs and have nowhere near 7 inches of lift. Furthermore, you really shouldn't go above 3 in of lift on these, 4in max, or the suspension geometry seriously gets messed up. The clanking is likely numerous different things hitting each other. And I'd imagine that driving with things like that for much longer will cause serious issues.
The problem may be that you preloaded the springs on the shocks, which the OME 886 are not meant for preload. And also, the 886's are meant for rigs that have lots of added weight in the front like bumper, winch, etc.

Sent from my Pixel 3 XL using Tapatalk