YES!
The plastic tool box is definatly the way to go.
I am using one myself that I got at Sears for $11.00. Like stated above I also put the power panel on the outside, Battery, fuel pump and 40oz fuel tank inside.
I personally dont see the purpose in carrying and ENTIRE full gallon of fuel with you to the pitts every time yoiu fly. I get about 4 flights out of the 40oz tank and if I want more I usually have the gallon of fuel in the car if I need to refil the 40 oz tank.

Cheers,
Ryan