[567234ta]

i doubt you need a stronger pump, its not that much further and its a closed system. a standard eheim 1048 will pump water thru a 50 foot hose and have very little loss on the other end when pumping openly.
ina closed system you got the syphon effect going, so anything uphill it has to push is being also pulled downhill.
like if you wanted to mount it 30 feet on the roof that would be fine.