Check a few reviews/threads on the SIG ARFs before you buy, at one point they were having problems but I think they have changed manufactures of there ARFs. I know the Pulse is a good one and both the 4* and Pulse are pretty much the same plane.
When you get with the club a lot of them have a trainer and box already set up for new students, if not, someone in the club probably does so no reason to run out and buy anything right away.
Once you have spent a little time on the trainer then either of the planes you have chosen should be just fine for you.