RE: Blackhorse Extra 300 .60
8D3 - When I got mine they stated that the wing halves are meant to be glued. Maybe the new ones are not. Still I would just glue then in case that the bolts do not hold well. I love BH planes but I am careful.
As for a SA150? God help us all if you do! I have seen this baby fly on a mere 90 sized 2C, its already good. The 125 will be brilliant. The 150 just overkill and heavy.