The only thing I'd change is to swap out the leg press for a single-leg exercise. That's for three reasons:
1) Most people I've seen leg press do it very, very badly on not-very-well-designed machines. Arched backs, knees tracking all sorts of places, machines with "weights" skewed to the point that 10-year olds can press 200+ pounds for easy sets of 10.
2) You need a leg press, so it's not as "portable" of a routine.
3) Everybody I met does something single-legged in their life, with significant side-to-side discrepancies, so it's easier to start ironing that out from day one.
So... With that said, don't be a wuss and leg press like you have some guts.
And doing single leg stuff as your assistance, is a pretty good idea. SO don't be afraid to do it in addition to squats and leg press, or instead of leg press.
But if you swap out the squat, without a doctor's note and verified medical evidence you can't do it, don't bother running this routine. Once you're advanced you can swap out a squat, but not as a newb.
NOTE: you can swap out the Front Squat for more back squatting. But I recommending trying to learn the front squat.