Motorcycle tour thru Mexico Any thoughts for a gringo who wants to spend several weeks going form Baja to Chetumal?

I'm very comfortable in Mexico and Latin America I just haven't done something like this alone. 

I know renting a car, taking a bus, or flying city to city would probably be safer. 

Was stopped in a pickup once by Federales but no big deal. 

Any thoughts? Would an older motorcycle attract less attention?