is 445 your max? I'd do something 135x10, 225x5, 315x3, 365x1, 405x1, 425x1, 435x1, 445x1.
You just want to warm the fuck up so you don't tear something in reality, while still keeping enough energy in the tank. You should know your body by now, warm-up however you see fit.
P.S. 445 is a...