Here's what I did:

I setup a dropbox account and made a folder called "My Games".

I then MOVED my "Final Fantasy XIV - A Realm Reborn" into that new "My Games" folder.

I went back and recreated a new folder in "My Documents\My Games" and called it "Final Fantasy XIV - A Realm Reborn".

I copied/pasted the following files from the dropbox folder into the FFXIV folder:

FFXIV.cfg
FFXIV_BOOT.cfg
*.dat (these are the saved character creation files)

I then made a batch file with the following lines:

mklink /J FFXIV_CHRNUMBERHERE "C:\Users\Icehunter\Dropbox\My Games\FINAL FANTASY XIV - A Realm Reborn\FFXIV_CHRNUMBERHERE"
mklink /J FFXIV_CHRNUMBERHERE "C:\Users\Icehunter\Dropbox\My Games\FINAL FANTASY XIV - A Realm Reborn\FFXIV_CHRNUMBERHERE"
mklink /J FFXIV_CHRNUMBERHERE "C:\Users\Icehunter\Dropbox\My Games\FINAL FANTASY XIV - A Realm Reborn\FFXIV_CHRNUMBERHERE"
mklink /J FFXIV_CHRNUMBERHERE "C:\Users\Icehunter\Dropbox\My Games\FINAL FANTASY XIV - A Realm Reborn\FFXIV_CHRNUMBERHERE"
mklink /J FFXIV_CHRNUMBERHERE "C:\Users\Icehunter\Dropbox\My Games\FINAL FANTASY XIV - A Realm Reborn\FFXIV_CHRNUMBERHERE"
mklink /J FFXIV_CHRNUMBERHERE "C:\Users\Icehunter\Dropbox\My Games\FINAL FANTASY XIV - A Realm Reborn\FFXIV_CHRNUMBERHERE"
mklink /J FFXIV_CHRNUMBERHERE "C:\Users\Icehunter\Dropbox\My Games\FINAL FANTASY XIV - A Realm Reborn\FFXIV_CHRNUMBERHERE"
mklink /J FFXIV_CHRNUMBERHERE "C:\Users\Icehunter\Dropbox\My Games\FINAL FANTASY XIV - A Realm Reborn\FFXIV_CHRNUMBERHERE"
mklink /J screenshots "C:\Users\Icehunter\Dropbox\My Games\FINAL FANTASY XIV - A Realm Reborn\screenshots"

Saved it. Ran it inside the My "Documents\My Games\Final Fantasy XIV - A Realm Reborn" folder.

I had to do the setup file on each machine with the copy and paste but now if I logout of one machine, I can startup the other and after DropBox syncs have my saved items.

The only issue is that the HUD setup doesn't quite lineup if you have different resolutions. The sad part is SE is unable to sync to PS4 for some reason. It's not valid because if you stored everything as JSON you could sync between any device and have the code on that device be responsible for it. I would LOVE to switch between PS4 and PC but I can't easily.