That's probably half the battle your having. I highly doubt anything will blow on you. With my snowblower, one heavy SOB, I have to crank it right out for the tractor to lift it.
If you move the lift inks out to the next hole, thought i could see it in the photo, im betting you will notice a difference. Shortening arms will gain you some, and its not increasing stress on tractor.
Your pump will take whatever rpms you choose.