The burner for the HLT does a good job, the burner for the BK is getting moved up since the kettle has a dished bottom and skirting that raises it up a little higher. The mfg recomendation is 12"-14" of space, they do throw and impressive flame.
The height is right manufacturer calls for about 13" distance between burner and kettle and yes they throw some serious heat so expect to lose some powder coat. The nice thing is the pot supports are short enough they don't pass over the top of the burners
@5B-brewing I a needing the cash for a bigger system I am currently building, thanks for the offer though
@mschuri Thanks for the bump, I currently have a plate chiller that is somewhat for sale, for the right price...See above for the rest.