Don't change anything about this program. I've calibrated it to work for you and don't want you adding weight, even if you think it's not as challenging as you expected. The only thing I'll give you room to adjust is the days you do certain lifts. Don't get me wrong: I'd like you to stick to the program as strictly as possible, but we all know that life happens.
If you only have time to fit in your big lifts today and can't carve out more time for accessory work, it's OK to do your lower-body, hypertrophy workout on your rest day or tack it on to the next day's training. Just be sure to fit all your lifts in during the week.