Not at all. If you are signed up to the on line magazine RC Report you can read Ed Moormans lessons each month, stunt flying. Ed is a great teacher. Reason I set my planes up for about 1/2 throttle trim for straight and level flying is because when you are going into most maneuvers you go into them straight and level at half throttle then add power as needed.
I teach my students with this, think of yourself driving a car at 50 mph, your just about to go up a hill, do you floor the peddle or do you just add throttle as you need it to stay at 50?? It's the same thing flying a plane, you cruse along then start to do a stunt, you roll on the power as needed, you don't floor it. Some manuvers are done at full throttle though. Read Eds dribble and you can learn pretty much everything you need to know.
Food for thought, the ASP is a Magnum so if you like the engines then look for sales on either one and buy the cheapest one.
Ed, Write the BOOK!!!!!!!!!!!!!!!!!
Gene