I didn't spend too much time on my grip doing OL, and I ordered the trainer and the #1. The trainer I was able to close well over 10 times no problem, and the #1 a couple of times at best. I would guess the #1 would be easy for you, and the #2 challenging.
Still, I think it is a good idea to get the trainer. It is the same quality as the other grippers and its ease will allow you to get your positioning right for the harder grippers. Plus, you can use it as a warmup.