I'm going to be that guy...
Don't bother shooting the Hipower unless you already have a rig for it. I wouldn't waste money on a holster and pouches because you know and we know you're not going to end up shooting that thing in matches long term.
Here's how I'd do it...
1- Decide what division you want to shoot
2 -Go to a match, beg to feel as many other people's guns as you can. See if the answer to this step changes your answer to the first step. If not,
3- Buy one, 10,000 rounds of ammo, and a full day practical shooting class with a well known trainer, or at the very least, your local hot shot. If you let us know where you live I'm sure we can recommend someone.