Upgrading LSF 9.0.1.8 - 9.0.1.10 (WAS Fix packs?)

We're looking to upgrade our ESP from 9.0.1.8 to 9.0.1.10. I'm a little confused on what versions of the WAS fixpacks to use? We're also coupled with Landmark 9.2.3.2.

It appears our Landmark fixpack has to stay on 7.0.0.13, but LSF says minimum fixpack 21. Also we have some end-points that tie back to LSF & LMK? Just trying to figure out what is the best method for this? Or should I just leave everything on Fixpack 13? Any suggestions on handling this?


LSF App - Minimum Fixpack 21
Landmark App (Strategic Sourcing) - No Higher than Fixpack 13
LBI/LBP (DSSO) - currently on Fixpack13 ?
End-point - (Supplier Portal, Punchout, ESS) - currently on Fixpack13 ?


Thanks in advance!