Austin,
I’m in the mood to type so I’ll say sorry in advance for the long post, hopefully though there will be some info that is useful to you.
My pre-workout shake looks like this:
1 banana
1 scoop Gold Standard Natural Whey
3 Tbsp of flax seed [ground up ahead of time in coffee blender]
1/4 cup chopped cashew bits
2 tsp barley grass
1 egg
I have a small blender that is a bit bigger than the ‘magic bullet’ blender on the infomercials, its the perfect size.
Now here’s the breakdown:
Banana - good carbs and potassium.
Whey protein - necessary protein for the workout.
Flax seed - ground up ahead of time in coffee blender. Flax seed is cheap and goes a long way. Contains essential omega fatty acids. Also has about 7 grams of fiber which is lacking in the standard American diet.
Cashews - big thing here! I don’t use peanut butter or peanuts. They aren’t a true nut, they’re a legume, and there also high in fungal content. This is a VERY bad thing. Pre-WWII medicine linked internal fungal infections with a host of ailments including cancer. Modern medicine is beginning to rediscover this link between chronic degenerative diseases and internal fungal infections.
We all have fungus/candida in our systems, however it is normally kept in check with a balanced diet. Problem is, in the fast food society we live in the balanced diet is not the norm. To treat an internal fungal infection you need wild oregeno in liquid form under the tongue as well as a good probiotic to restore intestinal bacteria. At any rate, try to limit foods with high fungal content. Cashews are a good choice for the shake as they also have some good fats and some protein.
Barley grass - 1 tsp has the nutritional equivalent of 3 heads of broccoli. Nuff said 
Egg - If you feel like putting a ‘Rocky’ twist for the shake. Make sure it is a vegetarian feed hen, cage free and hormone and antibiotic free egg. They’re a few pennies more at the supermarket, but worth it. Best source of protein, include the yolk.
All of this is my pre-workout shake, but could easily be used as a post shake as well. The grams of protein would be well into the high 30’s and the carbs well into the 40’s. Depending on the size of the banana you’ll be around 600 calories. Make sure to eat or suppliment with a calcium/magnesium source, very necessary.
If you get the chance at some point, get a Vita Mix blender. I never thought I’d pay that much for a blender in my life, but now that I have one [wife wanted it so of course we got it] I wouldn’t trade it. From a nutritional standpoint I’d give up my stove before the Vita Mix. We make a veggie drink using something like:
1 cucumber
1 apple
1/2 avocado
Handful of mixed spring lettuce
Handful of baby spinach
Handful of kale
etc
Sounds gross and looks like little green baby shit…BUT…it actually tastes pretty good. Don’t get me wrong, you’re not going to serve it at parties, but again from a nutritional standpoint it is a power shake that really isn’t bad tasting at all as the apple sweetens it up. And again, its getting some much needed fiber into your system.
Next would be some type of juicer. Green Life or Champion is the best but the Juiceman or Acme is good as well. Takes out the fiber but makes a great drink that goes from the stomach directly into the blood stream. Just don’t overdue the carrots and apples as it is a lot of sugar ever though its natural.
Both of the above WILL probably clean out your…ah…system 
I keep the bedtime shake simple, just the whey/micellar casein/egg albumen shake. I use the Zero Impact but I’m sure there are others. I also add the calcium/magnesium.
Hope some of this is useful to you.