Pet Walker - Full-time / Part-time

I have a 16 month German shepherd male, and a 11-year-old male pitbull mix . My 16 mth old has lots of energy and needs to be walked and loves to play with a ball. He is a little rough with the leash but is getting used to it as we moved from having a back yard to not having one. My 11 yo pittie is very laid back and loves cuddles and attention . He is very good on a leash and listens well. Both my boys are very sweet . My gsd is still learning manners so please be patient with him .