Feisty ... Looks good for now. Your upper body is getting work, although push-ups are primarily a chest/shoulders/triceps move. Your back and biceps aren't getting direct stimulation.
Lunges are a great lower body exercise. Crunches hit upper abs and indirectly hit lower abs.
When you get to the gym, add some back/biceps exercises to this mix, as well as some lower abdominal work (reverse crunches, knee-ups) and you are set. Actually, that is a pretty good program if you put the push-ups/lunges/crunches on one day, take a rest day from resistance training, then do the back/biceps/lower ab work, then take a rest day, and then repeat. LOL.
And keep up the cardio, slowly increasing to the 45 mins. Remember to take at least 1 full day off from ALL exercise each week too.
Greg ... Cardio looks good. Your training split is OK, although I don't see any upper/mid back (lats) work. It is a major muscle group so you may want to add that in (pulldowns, rows, pullovers, etc).
Your rep speed should be 2 seconds up, 2 seconds down. Sets of 10 work. Start here. You can always manipulate rep speed to make things harder on yourself later in the game as you grpw accustomed to the exercise (3 up, 1 down ... 1 up, 4 down ... etc).
Rest 45 - 90 seconds between sets/exercises. Again, this is something else you can manipulate later. When you are looking to build strength/add muscle, use more weight less reps ( 6 - 8), and take longer rests (120 - 180 seconds). To increase fat burn, use a little less weight, go to 10 - 12 reps per set, and decrease rest period (45 - 60 seconds).
You do not neccessarily need to increase carbs/fat to increase protein. There are many low fat/low carb protein sources out there. Most nutrition stores, as well as Netrition.com sell low carb protein powders. To go the whole foods route, low fat cottage cheese is a protein source, as is chicken/turkey breast. Some leaner cuts of beef as also suitable. Egg whites are a classic low fat protein source that bodybuilders have been using for years.
I suggest measuring weight/bodyfat once per month. Some do the scale every 2 weeks, but that can mess with your head.
Those who are new to weight training tend to add muscle at an increased rate, which may register as a gain on the scale.
Which is why I also advise people to get a bodyfat check every month also. As long as bodyfat is going down, you have progress. If you don't have access to body fat testing, take a waist measurement every month.
If that is going down, you are losing fat. No matter what the scale says.
Every 3 months I measure my arms, chest, shoulders, waist, thighs,and calves just to see if I am growing. It is optional.
If fat loss is your concern, the waist/bodyfat and scale combo is your marker.