I would love to do this....I would attempt to be a photographer professionally if I knew I would be able to do it on film and develop it myself.
Just Do It. Forget about whether it is film or digital and start worrying about the "professional" aspect of it. Photography itself is perhaps 15 - 20 percent of what is involved with being a professional photographer. If you really are a "professional," who people come to because they like your style and work ethic, the medium will not matter to them. Just use the best tools you have at your disposal to do the best that you can.
"Truth and love are my law and worship. Form and conscience are my manifestation and guide. Nature and peace are my shelter and companions. Order is my attitude. Beauty and perfection are my attack."