PhreeKandiJust get an echo sting trimmer and a Honda mower. You can't run a business with electric equipment and string trimmers make the best edge. Also, i find most people prefer a push, to a riding mower because it doesn't squash the grass as much. Of course this only applies to smaller lawns tho. Mowing an acre lot with a push would take forever.
I have a small gardening company and several of the towns and cities have gas blower bans in the area which I work. Stihl battery operated blowers are pretty great, the cfm are on par with a small to medium backpack blower(always measure blower performance based on cfm and velocity, never on velocity alone-the volume of air is what moves leaves), the battery life is decent and the charging is quick. They are pretty expensive on buy in but pretty inexpensive to run long-term.
I also like running the still battery operated hedge trimmer, especially on small or tight areas. It's not very loud and doesn't blow exhaust toward you when operating.
I don't know much about ride-on mowers, we just have a couple of Honda pushmowers as most homes don't have large lawns where I work. I'm in the bay area, water is expensive, frequently scarce, and it pretty much never rains from April until November, also means no winters off unfortunately.