based on back off sets. Always base projected data (weight selection) off of most recent data. If you know what someone's recent PR set of 3 is you can with enough experience predict what a heavy set of 5 would be. Well you would likely need to rest your back offs prior to this point but a new PR set of 5 on week 9 would be 167.5. I also would estimate that you would run 3's and singles for longer than you predicted here.