fuel filter arrangement

steampunk_2

I;m running the fuel supply line to the beckett gun on the mst-288 I installed in my house.  the tank is about level with the pump and about 8 feet away.  the becket manual says to install a 50 micron at the tank and a 10 near the gun.  garber, so far as I know,  doesn't make a 50.  can I use a garber "m" 35 micron filter at the tank and an r-2000 near the gun-or- should I put the r-2000 at the tank to catch the water and the "m" with the gauge at the gun?  how should I set this up?



thanks to all