Sheiko Prep Blocks without the Comp blocks

What would be the general guidelines for someone interested in getting as strong as possible without necessarily testing maxes? Like taking Sheiko prep blocks without the comp blocks for a long time, 8-12+ months. Would such a program work outside of theory or are the testing blocks necessary to judge progress?

How would one go about picking the load for a specific rep without knowing their 1RM?

Just do a skills test every 6-7 weeks and re-enter your maxes.
 :)

You could predict your 1RM but it's never accurate, it's better just to make 1RM attempts and change the program accordingly.