A while ago I saw a video on Youtube where Adam Savage (from Mythbusters) tested several methods of searing to find how best to sear a steak. Using a chimney starter ended up being an inexpensive method of getting a good sear! I’ll be searing a couple steaks on mine in about an hour. 
( Chimney starter is shown at 17:25 )
As for oils and smoke points - here’s a link to a list: