Looking to update my pwo shake

I've been out of the loop here and finally noticed that the price of pepto/sonic has dropped into my budget range. I need to update / tweak my PWO formula. Can I get some help?!

My current formula:
20% CFM Whey Isolate,
10% Hydrolyzed 520,
5% Glutamine Peptides,
65% Dextrose,
Flavor: Vanilla
Sweetener: Splenda
I also throw in some creatine P12 that I buy separately.

Should I just go with Sonic? Or maybe keep my formula but replace the Whey with Pepto???

Rich