Welcome to the forum!
We recently purchased a Baja model earlier this year for some of the same reasons it is appealing to you. I did see many of the same concerns you've noted regarding the front window and side-mounted AC units. I believe that the seal around the front windows has been improved over the earlier models as has the installation of the side-mounted AC. In my 195RB the AC is between the cupboard above the sink and the left front window so less of an issue. However, when I'm leveling the trailer and I think we may be using the AC I'll lift the right side with either a 1/2" piece of plywood or a regular leveling block - just enough to ensure that any condensation from the AC will drain to the outside instead of pooling in the drip pan.
I agree with The Meeker - sooner or later you'll have an issue to deal with. I'm happy with the quality of the Jay Flight SLX and the Baja package. We've had a couple of minor issues that have been addressed promptly by our dealer under warranty. Overall though we are quite pleased with the trailer.
I think we had 4 or 5 different trailers on our short list - but the Baja ended up being the one we felt like had the quality and features we needed. Given your description of intended use it sounds like a really good fit for you as well.
Best of luck and enjoy whatever you ultimately decide to get.