Your current board has a ton of foam. Until you're catching waves 10/10 with it, I wouldn't be downsizing.
When you do, think less about model and more about what you want out of the board. It's not going to be high performance, so I wouldn't be dropping $900 on a CI. Go and talk to your local shaper. You want similar attributes to your current board - wide through the nose, middle and tail, flatter rocker, nice and thick-but a little thinner and shorter than the 6'10 to allow you to progress.
On second thoughts,ignore everything i said- buy a thin, short, narrow rockered up glass slipper...more waves for the rest of us haha