Work up and do three heavy sets of two overhead squats. If you need to work on mobility between sets, then do so.
For the metcon, choose a very manageable weight for the power snatches. Singles are fine, but you should be able to get back on the bar right away. An Rx athlete will probably string 3-5 of them though. Scale HSPUs to pike box, wall walks (3), or stink bugs. Scale the number of double unders if needed.
4 rounds for time:
10 power snatches, 95/65#
30 double unders