I fly at ARCA out of Austin, Texas. The only reason I would tell you to consider a .46 is to think about the future. You will at some point move on to the next plane which should be a low wing trainer, tail dragger. You would probably want the .46 in that plane, and in future planes as your skill develops. .40s are good trainer engines, but somewhat lacking when it comes to advancing to the next level. I have a student now flying the H9 PTS mustang with a evo .40. He wants more power, but when we looked at what the work would be to do that, he finally realized it flys fine like it is. He is currently working on a H9 P-47 and putting an OS.91fs in that plane. He's ready for it.

Practice your rudder.
Edwin