As a former crown lead tech as well as a toyota lead tech, I highly recommend you gain more experience with gas/diesel/LPG. While I was at crown, most techs struggled when it came to working on anything but an electric crown. As a new business you will likely be working on older equipment so LPG is going to be common. You also won't want to turn down any work so being prepared will result in more success. Good luck in your endeavors!