I'd caution you on that "boat ride". At the end of the night, when you want to get home from MK, boats are mobbed. You might be waiting for quite a while to get on. And, I can remember one case where we had late dinner reservations at Artist Point, not thinking to check the MK schedule (which dictates when the boats run). It seems that the MK closed early that night, so when we came out of dinner, our only Disney transportation choice was to take a bus to Disney Springs and then a bus to our own resort, or to cab (pre-Uber) it. We chose the $6 cab ride over the prospect of blowing 90 minutes on buses. We looked at buying WL (now Boulder Ridge) resale (and actually made an offer on one contract), but with it expiring in 2042 and the higher maintenance fees, it didn't really work for us unless we could buy it very cheap (our offer was rejected, undoubtedly because we offered what would make it work for us versus what the market was saying it was worth).
My wife and I chose BLT for the convenience of walking to MK, and the quick ride on the monorail to the Epcot monorail. We had originally wanted to buy at Poly (walk to the Epcot monorail, monorail to the MK), but weren't thrilled with the renovations to the Poly common areas (we'd been going there since the 1970's, so the nostalgia factor was destroyed), nor did we like the choice of longhouses used by DVC (we prefer the other end of the Poly, near the marina). The downside to BLT is that it isn't as beautifully themed as the Poly, and the studios are smaller. We got enough points for a 10 night stay in a lake view studio. There's nothing like a trip to TOTWL for a night cap and to watch the fireworks, and then sitting on your balcony watching the electric light parade on the water after a long day in the park.