ORIGINAL: CAP232CM
A Webra 120 is the perfect match for this plane. I think your asp 108 would be way too small but the mds 148 will work just fine.
If you use the 148 make sure it's reliable a bi plane won't dead stick in like a trainer it will drop like a rock. I had the older Mds with carb problems, just make sure you have the new style carb.
I have a Webra 1.20 in mine and just love it. Plenty of power and flies light. A fellow flyer got his about the same time and thought he was going to blow mine out of the sky with his "bargain" MDS 1.48. After fighting one deadstick after another he quit bringing the plane to the field.