First get rid of the bowflex and invest some of that towards a gym.
second: Hit free weights hard and heavy each body part once a week
third: I'd like to see your routine im sure there are things that could be easily changes for you to see results faster.
fourth are you getting enough protein 1 to 1.5 grams per pound of bodyweight?
My protein is usually 1 gram per pound of bodyweight - sometimes more but usually not less.
Obviously my bowflex thinigie's "weight measurements" are inaccurate. I can't go to a gym as I live in a small town, work an hour from home in the "big city", run a home based business in the evenings and weekends as well as raise a 5 yr old and maintain a healthy marriage. Working out at home is what I have to do and a full blown gym at home is not an option for both space and $$$
but here is my general workout...
CHEST
Bench Press (incline, decline, straight) with bowflex (200 lb resistance) 3 x 10 reps each
dumbell fly (incline on bench w/free weights) 25 lb - 3 x 10
SHOULDERS (free weights)
dumbell press - front raise - lateral raise - 25lb 3x10 reps ea
upright row (with bowflex @ 120 resistance) 3 x 10
BICEPS (free weights)
hammer curls, concentration curls, 21's (25 lb dumbells) 3x10 reps ea
sometimes 3 x 10 of curls on bowflex around 160 resistance
TRICEPS (free weights)
kick backs - extensions (25lb dumbells) 3x10 reps ea
close grip bench (25lb dumbells) 3x10 reps ea
push downs on bowflex around 120 resistance 3x10 reps ea
ABS
usually 100-200 situps (been doing this per day for the last week and it's going good) 3x10 reps ea
BACK (machine)
behind neck pulldown - close grip pulldown - lat pulldown 3x10 reps ea
these are generally with 200lb resistance on bowflex
LEGS/ASS/ETC
Don't work these out. Wife likes them as they are and I don't want huge horkin thighs. I tone maybe once a week doing girl leg lift things with my wife when she works out.
My workout has generally been (each part 2x per week)
DAY 1 - CHEST - BICEPS - SHOULDERS - ABS
DAY 2 - BACK - TRICEPS - ABS
DAY 3 - OFF