I want to include an electric pump in our new 53 HP Betamarine installation.

Any advice on which pump to use?
What I have found so far are expensive overkill, with max pressure output of 50 psi etc. and flow of 3 gpm.
The engine uses only about 4 l/hour, or approximately 0.01 gpm. Say 0.2 gpm if we allow for a large recirculating flow.
The engine has a mechanical pump, but it is recommended to add an electric one if lift is over about 2 ft, as ours is a low tank level.