electric fuel pump prime problem, Mr Fixit or others?

[snake farmer]

My Fuel Safe cell has a top of cell fuel outlet rather than the bottom outlet seen on many cells. After asking both Fuel Safe tech people and Barry Grant tech people to help me set up fuel system that would support a 750 HP engine and a designated fuel pump for a 250HP NOS pro fogger system, they advised of 2 fuel pumps and fuel safe advised a -10 pickup. this was fine because BG people said I absolutely needed a -10 supply line from the cell to the pump. I spent over a thousand dollars on pumps/filters and fittings. Now I discover and have since been told by BG that none of their pumps will "pull fuel",but rather they have to push fuel and their pumps must be mounted lower that the cell, calling for a bottom pickup. (None of their written instructions tell you this.) I discovered this when the pump would not prime. After pressurizing the cell with air I get fuel to the cargs but when I shut it off the car the fuel keeps running back to cell as the pump is mounted about 12 inches above the cell. Then the need to reprime the pump. If those tech people had listened to me about the application (Cobra) they would have know that the cell sits very low in the floor of the trunk,almost impossiple to mount a elect pump lower than the cell (cell is about 6 inches off the pavement. I ask anyone if I can put a fuel check ball valve in the line between the pickup and the pump, thus holding fuel from running back to the cell and unpriming the pump. I've been told that I may need pressure equivilant the weight of the fuel (several gals) to keep the pump primed. With my check valve plan I would have fuel to the pump but with no real pressure behind it. Anybody have a pump for the pump?

Signed, desperate in Des Moines.