Has FFG stated out a Blurrg? I'm considering making a Twilek Pathfinder with one as a mount.

My recommendation is to find the closest comparable mount already printed and re-skin it to what you want. An eopie would be a good choice, if one is listed in the books somewhere.

A player's mount is not likely to be a significant combat participant, so you probably don't need detailed stats; you really only need movement speed, most of the time.

Eopie are in Stay on Target. as are other mounts that may fit better.