My board = Uno
Devices I want to use (and load bootloaders on) = Atmega 48v running at 10mhz, 88, 168 and 328.
those are all in the list. Note that the 48 won't support a bootloader.
Method = breadboard with crystal connected to Uno board.
I have fumbled around with using arduinos as programmers with variable success. I eventually bought a programmer.
Once the bootloader is on are you going to plug these into the arduino to load a sketch then plug them into some other circuit to run in?
I'm a little leery of the 10mhz crystal, some of the arduino stuff is fine with oddball speeds, some of it insists on either 8mhz or 16mhz. Also, if these are factory fresh chips they're likely set up to run on the internal oscillator so you could skip the crystal on your breadboard.
As you note, I'm geographically close (Orleans) and I don't mind helping physically. You could mail me chips for programming or maybe a phonecall would help. PM me if you want to follow up.