well for morning and Pre-WO you need regular whey (fast absorbing), i wouldnt buy soy proteins because its more expensive...
Before bed casein is better (slow absorbing)
But i wouldnt rely on powders so much except for morning and PWO... whole food is so much better!
Eating every 2-3 hours, and total 1.5g protein / lbs is they key (chicken, steak, tuna, whey, cottage cheese(before bed)) , putting in some good carbs (brown rice, wholewheat bread and pasta, oats, porridge, rice cakes...) and some good fats (natural peanut butter, fish oil, flaxseed oil, avocados, black olives...)
Post your diet in diet & nutrition forum
With the excess your body will do nothing useful, but its hard to pinpoint too much... but you still count the calories!
If you are in the UK, I would try:
http://www.theministryoffitness.com/ http://www.wheyconsortium.co.uk/ in the US:
http://www.trueprotein.com/ and there is another one with good reputation for US i forgot...