I'm not in the SF Bay area.
Suggestions? You seem to have the general concept pretty well flushed out.
Perhaps it would be an idea to anonymously set up a website with more information on it? So people who hear your beacon can get more information on its use. Why morse code?
Once you reach VHF, morse code just isn't used.
Why not a digital mode like RTTY? or FSK?
Perhaps a small linux system could be used to handle the BBS/ Modulating and Demodulating of the signal (check out http://www.whence.com/minimodem/
), and radio control.
Also, for solar power, do you want it to only run during the day when there is sufficient solar power?
You could do this in hardware or in software.
Either way you will require a power controller of some kind.
Make sure to use an antenna tuned to the frequency of operation.It is possible to locate your setup in 10 minutes to 10 meters by amateurs.
Look in to fox hunting and how to be a better fox.
Good luck! Don't let your dreams be dreams!