You should fly the name with the TM mark from day one. That is what shows prior commercial use. Nothing at all is required to use TM.
You get to have the R mark after applying for and getting the trademark registered. But a registered mark can be overturned by anyone who can prove prior commercial use.
You get to have the R mark after applying for and getting the trademark registered. But a registered mark can be overturned by anyone who can prove prior commercial use.