How deep are those squats? And nice volume, what's your preWO stack look like?
I go deep (full) until I get until get to 275 then I start to go halfway down.
My Preworkout is
40-80g of Carbs (Usually Bagel or Oats) about 1 hour prior with some Whey Protein.
And either 1 scoop of White Flood or 1 Beta Nox Tube 25 minutes prior.
I used to do 1, 3 Dymethylamylamine @ 50mg pre workout and that stuff was insane and cheap, but it killed by appetite.