Hi Juan
Can't help you with this model but I can say twin booms can fly very well for a lot less faffing about build wise. I scratch built a twin boom with an OS 30 a few years ago and have had an enormous amount of fun with it. Planted some balsawood trees with it several times but it has been tough and easy to fix and chuck back up in no time. Good rough weather model and of course built legless, like any flying wing can fly from virtually any surface with a hand launch and belly flop landing.