I think that, like a Guild short-scale, it needs medium scale strings. This is due to the string-thru body design - there's a longer distance between the ball-end and the saddle.
Correct (about the "string-through" design). I have D'Addario ECB81M (medium scale length) Chromes (flat-wound) on mine. Gauges are 45-65-80-100. I use the same strings on my Starfires.