I'd hit the yard with round-up and then amend with compost and white sand. Till that collection a few inches deep. Leveling can be accomplished with a garden rake in tight spots and a harrow rake in the larger areas. A rake can be fabricated with a pallet tied to a chain, pulled behind a riding mower.
If you till when the ground moisture is too high, you will get clumps. The ideal moisture content will give you a powdered, well mixed surface that is easily leveled by hand. Too dry and you'll recreate the dust bowl.
Please note that round-up won't take care of any seeds in the ground. Any dormant weed seeds will come up when conditions are proper. You will need to address this later.
If you till up bermuda grass without treating with roundup, it will come back with a vengeance.
Too bad you're so far away. I could fix you up in no time.
