You better get it on the market soon because someone else will outsource it to china & under cut your price big time. Something like this you need to make your money quickly because once it starts selling other people will make copies for less & flood the market. They change it slightly & it doesn't matter if you have a patent or not. We used to prototype exercise machines for a guy & then he would take it to china to have them made. Made, powder coated, boxed, shipped to US & delivered to the warehouse for the same price as we could buy the material.