I am in the planning stages of tackling my backyard. I have approx 12500 sq feet where I want to seed grass. I have two diliemmas. First, what is the best way prep the ground. Currently, I am planning to kill the weeds with Roundup bring in 7 loads of topsoil, and then have it graded and leveled. However, I am thinking about spraying Roundup, tilling the ground and then grading & leveling and using topsoil only as needed. Second, I debating between hydroseeding and seeding the old-fashioned way. One contractor wants to charge $1700. I think I can rent a hydroseeder and do it myself. Is this a good idea or do I need to know rocket science to do this task. Is hydroseeding really worth the time and effort? If I did it myself, do you have advice? Finally, seed. I think Bermuda is the seed of choice. Variety? Yuma or Triangle. I think that it will be durable and will forgive the time or two that I leave the dogs in the yard.