Exhaust Cam Seal Leak: Is it bad idea to do PCV first?

[plumsmooth]

I've decided to do the PCV, but am trying to build me confidence first.

AS long as I leave me dipstick in raised position, can I replace my Exhaust Cam Seal first without endangering my RMS or anything else.

I realize the reverse is ideal; but I could use a few more days to gather up for my PCV, where-as this Cam Seal I feel confident enough to try as my first engine work...

Thank you...