I'm working on a prototype for my invention. My situation is that I can't afford a patent attorney at the moment. So my plan is to file a specification for the invention myself, no claims yet. Then advance my prototype a bit more and find investors. Once I have money for the project, and no later than 12months after my initial filing, I can get a patent attorney to write a full patent. Then my assumption is that as long as my first specification includes enough support for my invention writing a full patent for it should be possible.

Any comments about this plan? is that fine? risks?