and agree with all that age is a relative thing. I am an oldish fart only when I pass gas otherwise my mental self image is stuck around 26 or maybe 36 by now.
You asked about guide books etc. and I do not think that anyone mentioned the USCG Coastal Pilot manuals that cover every US inlet along the way for the trip you are planning. They are free and you can download them to your computer for future reference. They take a bit of sifting through to find the actual descriptions of each inlet, what you can expect in adverse tidal situations and other specific warnings. Well worth downloading and perusing a bit. They are available here: Office of Coast Survey - United States Coast Pilot
There are download-able charts available from them as well.
Enjoy your planning and as a half centurion (+) you will no doubt do the necessary research and contemplation to make it a fun and safe trip. I look forward to hearing about it next year.