Linzq,

First of all, welcome! I think you are doing a great job - and you are certainly adding a lot to your plate all at the same time!

The trainer is a nice idea, that will help you get used to the new way of shifting (says she who has never ridden with non-trigger shifters). Is there a nice quiet parking lot you can go to for practicing with the new bike? All of that new stuff + traffic can be, well, a little nerve-wracking. I know it would be for me

Is it an option to put platform pedals on your new road bike until you are more comfortable with it? This would give you one less "new thing" to focus on. The important thing is that you feel safe, and especially where clipless pedals are concerned there is quite a difference on how it feels on the trainer than it does on the road. At least that is my experience...

Congratulations on the new bike - and before you know it you will be having fun on it and forget this part of the process