My trailer is parked on the left side of my house, garage is on the right. I use a sewer solutions to empty the trailer through aprox 60ft of 1" PVC I temporarily put together and then up 3ft to reach the washer stand pipe in my garage. It works. I do have pretty good water pressure which was important in making this long a run with elevation gain. Looks like it should work fine for you. Make sure you use the recommended hose / PVC diameter for extending. Once over the sill the siphon should help keep it going. I have been very pleased with my sewer solution.
