Tank location on 20MA

[tunaorlater]

I am going to be redueing my deck after the holidays, the tank looks good and pressure tests fine. I will be putting a 140hp Suzuki on the transom after I raise it to 25 inches. My question is should I move the tank foward to compansate for the heavier motor or leave it in the same location? The batteries can be moved under the front of the console but would rather leave them in the back and cut the front seat off the console. Thanks