Hi Louis,
I think there are few big misunderstandings on your part. I am not trying to "upsell" you here but I think a $150 consultation with me or another qualified person would be beneficial to help walk you through different strategies and ideas based on your goals. It is a complex process with many potential pathways.
The biggest thing is that a patent application or even a fully issued patent does not give you permission to sell anything. It is a defensive tool used to stop others. That is a huge difference that most people don't realize. Just because you file your patent first does not mean you have some clearance to launch a product. See this post here:
https://patentfile.org/your-patent-is-not-a-green-light-to-sell-a-product/ and this one
https://patentfile.org/you-have-a-patent-so-what/The main reason you would file your PPA is to lock on your priority date. You full (non-provisional) can then link back to your provisional. Because the upfront cost of the PPA is so much less, if done properly, a PPA can be extremely powerful for relatively little cost. In one example, lets say you file a good PPA for $2,000. Ten months later your competition files a full non-provisional using an expensive Boston law firm for $15,000. You later file your non-provisional and link it back to your provisional. Because your applications have an earlier priority date (based on your PPA date), you can block the other company from getting their patent approved because you have the earlier date.