You might want to check with a "Coach" or one of the staff, on your Question of "is it okay to do weights with Insanity, I think we all need to listen to our own bodies and if we feel it is something we can incorporate, however for me: Yes I believe weight resistance training to be an important part of my routine - here is my schedule I set up for next week with Insanity per calendar - 6 mornings, and in the evenings I do my resistance with P90X
Sat - Chest/Back/Abs
Sun - stretch
Mon - Arms/Shoulders/Abs
Tues - Yoga - this is the same day as Cardio recovery for me, so these go together well
Wed - Core synergistics/Abs
Thu - Legs (this DVD also has pull ups for back but i dont do so many of those since i do them in chest/back DVD)
I like to only work each body part 1x per week (except Abs - Tony says 3x per week)
When I finish Insanity I might incorporate Kenpo, Cardio and Plyo from P90X in the mornings but now it is too much with Insanity every morning and i am kind of addicted to Insanity, so we will see how it plays out
Friday - Off
Hope that helps

Peace,
OCGurl
49 years young!
Insanity AM, P90X PM