Ok ok, I get it

Thanks so much for the advice, that was exactly what I needed. I had more or less settled on the Matrix, both in order to get myself a brand new sail, but also because I was confident it would fit my level. I just got tempted by the low price of the Point 7s, thinking "how hard can it be"

One of my main concerns was that it would hold me back in learning beach/water starts/tacking/jibing, and you guys confirmed that. So no question, I will get the Matrix and be happy to know that Im getting a sail that fits my level.
When it comes to sail size I was not sure about the 6.2 and I might go bigger. When judging by my previous sails, I was afraid to get a sail that was too big, thinking it would be easier to learn tacks/jibes etc. on a smaller sail, but maybe thats not such a big issue with a light freeride sail?
Im on the heavy side (around 90 kg) and on a 130L JP Excite Ride. I usually sail in fairly flat water and not very high winds (usually 10-20 kts). Have been sailing 5.4 - 6.2 sails before and had no issue getting planing in 16-18 kts, but ofc it would be nice to be able to plane in lower winds as well.
Looks like I have the option to get the Matrix in three sizes 6.2, 6.7 and 7.2.
I get the feeling that you guys is going to say I should go for the 7.2?