Not at all Heretic. You only need to do a leg workout a maximum of twice a week, indeed I think that if you did a 5 x 5 squat once a week you'll make significant strength gains. That will leave you plenty of time to stretch. If you wanted to work the legs mroe than this, then you could deadlift on another day, which would put less emphasis on your legs, more on your lower back, and would therefore still allow you to stretch the day afterwards.