I don't think rice is a wasted calories, rice is great for you. Brown better than white of course. Also a protein smoothie for a meal is a great way to get in your fruits and powder. Just me though. I do agree that chips should be cut, and limit rice, wheat to Post workout. Also would cut out the protein bar as its just a glorified candy bar. A little nibble here or there for choc craving yeah fine but as a whole meal doesn't offer much. Basically this is what I see in your menu and somethings that would further help you along...
Preworkout - 2 scoops whey(100), .5 milk(60) = 160 (you could throw in a good carb here being its pre-workout need the energy)
Postworkout - 1z chopped pecans(200), 2 string cheese(140) = 340 (this is really not a great post workout meal. It pretty much all fat, and fat post workout is not what you want. You want protein and a fast acting carb to help repair muscle.
Snack - .5 cottage cheese(90), 8z yogurt(250) = 340 (Now is this a sugar free/non-fat yogurt? If not it needs to be. You can spice it up with some fruit,cinnimon,and splenda.)
Lunch - string cheese(70), 10 homemade chips(110), 3z tuna(90), tortillia(50) = 320 (ha you love that string cheese eh

This isn't so bad, but I would take out the chips and maybe throw in some veggies)
Supper - 3z steak(220), potato(150), corn(100), tbsp butter(30) = 500 (This is pretty late night and long after workout for potato, also corn is very high carb and not the best veggie for cutting.)
Snack - protein bar = 180 (again protein bars just not that great for you, plus usually have carbs and again not good for night.)
So lets re-work this with some foods you like in mind portions/calories depends on your calories needs. I do think the higher calories range of 1750-1850 is good. I would even bounce and do 1700 some days, 1900-2000 others.
Pre-workout-Eggs with oatmeal (flavor with whatever, splenda, fruit, cinnimon, whey, whatever..well not whatever

Post-workout-Smoothie (whey,fruit,oats, whatever)
Meal -2 -Chicken with brown rice
Meal -3 -Tuna wrap with string cheese
Meal -4 -Steak with broccoli,(reduced fat)feta and tomatos (diced) (season veggies with some garlic and light smart balance butter)
Meal -5 - Cottage cheese and Peanut butter
See thats alot of food, little better organized, you will fill much further, and are eating for what you are doing and when you need it. Just a suggestion but worth a shot.