Just a hint....Magnums are good engines, but they are HEAVY, good engines. Think light, you will be glad you did...if it means waiting and doing a few extras to earn the money, do it. Good engines are worth it for many planes to come.

You have a sort of, 'beginning' performance aircraft there. If that is the road you stay on in this hobby, you will be happier with a lighter engine.

Just another unsolicited opinion. Things usually cost more for a reason, especially if there are a lot of substitutes on the market.