Hey Chad.
You are definitely circling around doing all of the right things to
stay fit and keep your weight in check.
Diet is key. With less activity, you need to be sure that you are not
eating beyond your means--especially extra carbs.
A simple way to gauge this is by trying to eat a gram of protein per
pound of bodyweight for your ideal weight. So if you would like your
weight to be 180 pounds. Try to eat a 180 grams of protein per day.
This sounds like a lot, but when spread out throughout the day with
meals and snacks, it really is not.
Surround the protein in each meal and snack with a favorable carb and
fat source. Well-rounded meals like this keep your energy levels in
check, which helps to prevent impulse snacking. Steady energy levels
also creates a favorable state where the body can access its own
stored bodyfat (a.k.a weight loss).
Further explanation on this can be found in this article:
http://groups.google.com/group/tlnutrition/web/tln-article-archives-40-30-30-nutrition
As far as workouts go, you are doing exactly what you can do. I have
a challenged schedule as well and learned to get my weight training
and cardio into 3 to 4 days per week. My workouts last approximately
60 - 90 minutes. To serve as my warm-up, I do my 20-30 minutes of
moderate-intensity cardio before weights. At least one day per week,
I try to do a higher-intensity, longer duration cardio activity (ice
hockey or jogging).
Keep a varied weight training routine that combines exercises for both
strength and muscle growth and maintenance. This includes using high
and low repetitions.
For a balanced, time-efficient strategy, check out my weight training
journal:
http://groups.google.com/group/tlnutrition/web/tln-weight-training-journal
Keep me posted on your efforts!
TLN Phil