Most C/L models don't have dihedral. They don't need it nor do they want it.

Dihedral helps. If you can do so, think about using some dihedral. It's often worth having.

A lot of C/L models are very short coupled. Those were designed to loop in a LOT TIGHTER radius than most RC planes will ever be asked to turn. You're not going to need the surface deflections the C/L used, and you're certainly not going to want them. And when the tail moment is short, the CG location has a narrower range of placement. None of these are a real problem, just something to keep in mind.