Yes, the FT-60R has a wide RX/TX mod available. You'll still be limited to freqs within 30 or 40 mhz of the factory TX range, but that opens a lot of stuff like FRS/GMRS. Don't forget tone scan for figuring out FRS/GMRS squelch tones, those are how privacy channels are encoded.
Also, make a note to memorize the button sequence for performing a smart search. Very handy feature.
Here's a write-up I did on that:
http://www.ar15.com/forums/t_10_22/655997_scanners.html&page=1#i11198685
I kept forgetting those sequences, so I cut an index card to fit inside the battery compartment, and wrote the instructions on it.
As to accessories, the AA case is a good call. For programming, I think I used a USB-TTL or something converter box purchased online. Not sure offhand.
And there's some issue with the earphone jack. I don't remember what it was, but plugging earphones directly into the jack is messy since it's mono, or maybe an unusual jack, or something. Get the external mic, that has an earphone jack on it which produces correct sound. There's also a standalone adapter you can get instead, but the mic adds a capability and the adapter doesn't.
Enjoy the radio!