The YS 1.10 would be perfect. I built the 300 about ten or twelve years ago and put in one of YS's first 4 strokes...the f-1.20. It was an awesome combo. That was absolutely my favorite plane to fly before I got one of the patrick 1.20 size ultimates five years ago. I wish I still had the extra.....I do still have the plans.....Mmmm .....winter is just starting here.......Mmmmm.