The Mountain Models website gives it as 38" span and about 12-14 oz-an LA 10 should do nicely-or even a Norvel 074. Impressive CAD work in the instructions!
The MM website has it listed at $69.00 Many years ago (ca 1974-75) I flew a David Boddington 'Tyro'-which was a Brit design, on an OS Max 10 R/C-the crossflow version-and it was quite a bit bigger than the MM Tyro design-but only rudder-throttle-so flew a bit slower than this one is likely to.

'ffkiwi'