you can get the exhaust of the powered pump as far as the pick up to the manual pump you should be able to get it to a suitable spot for discharge. You might need a more powerful pump but it's all about head pressure/lift capacity. You should be able to find a pump that would work. I would also loose the float switch and go with an air pressure switch. They are located out of the bilge and much less prone to failure. All they have is a 1/4 inch plastic hose that extends down into the bilge. I use a Jabsco Water Puppy with an air switch to empty the bottom of my bilge. It has about a 5 foot head pressure limit. I had to replace the impeller with a neoprene type because of the potential for oil to swell the normal one but that was simple to do.