I think you should keep your 50 points at BWV, and you were lucky to get them "under the wire". As mentioned above, there was no doubt someone after you on the waitlist, who missed out.
This will give a real opportunity to use the RAT, see how quickly rooms fill up and become unavailable, and have full benefits. You have a lot left to learn, and now you will have full access to that info. Many people don't know much when they buy in, even the first several years.
(I'll never forget the
DVC member who

complained they had owned at OKW for 13 years, and were

FURIOUS they couldn't get into Aulani, room size and dates they wanted, as if it would just be sitting there empty waiting for them. They had owned for 13 years!!! They apparently thought just being a DVC member meant they could stay any resort, anytime they wanted, any room configuration they wanted.)
It can take some time and trying to use your membership to learn it all. I bought in only knowing what the guide told me. It never occurred to me to ask sleeping configurations, so I understand why it didn't occur to you. I didn't know about Disboards, which has proved a valuable resource. I didn't know there was a resale market. Learned that on Disboards too. (Not computer savvy either, didn't know how to research it online.) Now you can access the RAT, and already know about Disboards, so you will be able to learn the rest you need to know to make the best choice for your resale 350 points. Take your time and continue to learn. I think your $1800 figure of saving on 6 APs is way off. Don't know where you got that figure.
Good luck with whatever you decide.