Are you just doing steaks? If so, a UDS basket full of charcoal is WAYYY to much. Steaks take like 20 minutes to cook.
You should really really REALLY consider a dedicated grill.
But to answer your question, light a full chimney of lump, when its white hot, dump on top of the other lump. Let it sit for 10 or so minutes then throw the steaks on. Run all vents wide open.
18.5" OTS, 22.5" OTG, CB Silver(Rip), Vintage Coleman Bullet, Pit Barrel, UDS