Adding extra accessories to PL II

Will be using PL II for my first meet prep. I took your guy’s advice to run the 12wk strength template as is, if it was my first time. Now that my work capacity has adapted to the training style and volume, wondering if it would be a good idea to add extra accessories for the first 6-8 weeks before training gets into the specialization block

The accessories I’m thinking to add:
GHR for direct hamstring work (12 week strength left my hamstrings feeling undeveloped)
Good morning SSB for posterior chain work (I pull sumo)
Copenhagen planks (to supplement my sumo)

Do any of these accessories have its place in my meet prep?

I don’t think that you necessarily need to add those things in, but if you want to do it for the initial developmental phase…you can.