You're not going to get tannins at 160-165F steeping. That line starts at 170F. The instructions in my wife's BB kit were like 150-165F. She did it at 160F for the 20 mins called for. Then bring to a boil,but DO NOT add the extracts yet! You have to go through a foamy hot break 1st. Keep it stirred down,or it'll boil over right quick.
then,I add half the extracts,saving any LME's for flame out. then do hop additions,the lighter load of malt will give better utilization of the hop oils. Do flame out addition,then add remaining extracts,cover,& let steep while the BK is still boiling hot. That residual heat is more than enough to sanitize the extracts. No need to boil the living hell out of everything. The nasties aren't that tough. Then chill in ice water bath down to good pitch temp.
Everything works if ya let it-Roady(meatloaf)