That would be a little complicated. Just find your max for each block before you begin the training cycle. Then before your first workout on the first day of the 15's even begins, you know 8 weeks ahead of time what every weight, every set, every rep is going to be.
If you don't want to actually test for 15RM, 10RM, 5RM...
you can just find your 15RM then add 15% to guesstimate your 10RM, add 10% to that to get your 5RM... it was explained somewhere in the HST notes part of the site, I just don't remember where.
Then when you finish your cycle, just SD then repeat the same thing all over again with slightly heavier weights.
If that's too long and rambling, I'll simplify using my weakassed squats as an example.
15RM=150. First 2 weeks looks like this:
1x15
100, 110, 120, 130, 140, 150.
Next 2 weeks looks like this:
2x10
120, 130, 140, 150, 160, 170
Then there's this:
3x5
135, 145, 155, 165, 175, 185
Here's where I go away from HST so you may not want to do like my last 2 weeks:
5x3
155, 165, 175, 185, 195, 205