2hours is all you need per day on a treadmill/eliptical/cardio whatever. Your bowflex is toning your existing muscle mass and your cardio is making good use of your toned muscle mass.

While it's good you have found your happy-medium in what you are looking for in physical exercise you may want to do an alternation work out schedule. Trainers do it, Arnold does it, Evander Holyfield and even George Foreman and Joe Frazier did it. It just plain works.

Give yourself about 2 days rest from exercise then go to the next exercise you have planned.

Kinna like this

Monday, Cardio

Tues/Wed, Rest

Thursday, Bowflex

Friday/Sat, Rest

Sunday, Cardio

Mon/Tues, Rest

Wed, Bowflex

I think you will find that you can do more with this method as you will be fully refreshed and you won't be so sore.

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