To whom might be of help,

I would appreciate if anyone with the relevant experience to help could give me some advice. Here it goes:

I have allready started a documentary film and yes, I am just now improving sound! So, I know the ECM-NV1 that comes with my camera (DSR-PDX10) is not a good option. I am filming alone and for now there's no budget for a sound person (and that's it). I am following the life of a person who travels a lot, by car, train, underground, airplane and also ussually in noise situations (e.g halls with music, etc...) I am considering buying the Sennheiser K6p (or K6)+ M66, which I know will do a good job though what worries me is probability of casting shadow. Anyone with this combination. If not my option would be the M64, sacrificing a bit (compared to the M66) what is most important, the dialogue. I also plan to buy a Lavalier system for ambience. Any suggestions, experiences, help will be gratefully appreciated. Kind regards, Tomas.