Yeah, definately mix the surge both before and after.
If you really must have something to drink during, I would suggest 1 scoop surge before, 1 scoop surge during (really diluted so you can drink alot) and 1 after. Which keeps with your original 3. Surge is certainly better than gatorade in every single possible way…
P.S. I read somewhere that gatorade is sweetened with fructose, which is exactly what you DON’T want. Havn’t verified this myself though…