Real similar Lee. 5min presoak, develop, water stop for 3mins, fix 6min and then 20min wash also followed by a quick dip in photoflo. I have some hp5 35mm that i was going to also dev in pmk, nikkor hand develop. I'll try your sugg. time, though I typ agitate for first 15sec, then 15sec/min.
thx for sharing your thoughts