In reply to cheek to the rock:
I will sound like a steam roller squashing people flat but I would advise caution with Blackout. It is a very good route but is perhaps best done with two half ropes and the knowledge of how to best protect leader and second across the traverse which is I think the crux. In comparison 999 is very straight forward.
Do get into Wilton 2 and check out the following. Kukri Crack, Flake Crack and Throsher which is a good fighting 4c crack with obviously very good pro.