Yes it will be fine my 50gal diesel tank has a bib that is about 1-1/2 to 2" from the bottom and my burners have between 2-4ft lift to becket and the lines are 8-10ft from tank
As a mechanic also, I do not see any problem with your setup. It is basically and inline fuel pump so it will suck from the tank and apply to machine from a great distance.