The idea of deads on wednesday is because your squatting heavy for a 5x5 or 3x5 or whatever on monday and deads involve alot of leg. Its hard to really load the bar for deads when your legs are screaming from the squats. That's my experience anyway.
OHP shouldn't kill your lower back unless you're really arching your lower back. 0311 and Eric helped me with the proper form on OHP, I don't know if that is the problem or not, but I'm definitely convinced that OHP is 100% technical. I was surprised as shit at how much it affects your pressing power.
One suggestion for the accessory would be to do Triceps on day 1 and 3 since you're already smoking your tri's from the pressing and doing Bi's on day 2 since you'll be doing heavy pulling. I would suggest doing a 2x10 or 3x8 with a very heavy weight and minimizing your rest time rather than doing an RP, or do an RP at rep 8 or 6 (depending on if you do the 2x10 or 3x8) followed by squeezing out 2 more reps to make the 2x10 or 3x8.
Just lookin' out for ya bro
