My hope is that they will consider my airline time as x-country time?¿?¿
I'm afraid that's not the case. For my application to be accepted I had to wade through 26 years of logbook (USAF included) and fill in the X-Country time. It will need to be broken down into PIC, Solo, Night PIC, and Other just as requested on the Aeronautical Experience form. There's really no leeway in the requested format. I sorted out the PIC and SIC X-Country in my log and then figured out the rest for the Aeronautical Experience form. An electronic logbook is a GREAT help in doing that.
As long as you're going to have to wander through all those logbook entries anyway, it's probably not a bad plan to get a good electronic logbook and transfer the data. That will automatically take care of any math errors along the way. It will also make a nice clean presentation for the JCAB folks when they look at your book.