Sort of agree. Really if you have the money go for it, but I can't fathom what kind of loss you'll take on all those batteries 6-8 months old and the cost in LIFEPO is going to run you around 8-10 stacks. You had to know a 35,000W system wasn't going to be a real daily driver with or without battery weight.
I sort of tuned out during the whole alternator fiasco, but again, if they're working, wouldn't it be best to just send them in to get the regulators fixed or externally regulate? I'd worry 13.1 isn't adequate to properly maintain your batteries, but an extra 1.3V would most probably be inaudible (10% more power). I'd bet you could drop that 10K into electrical and wouldn't even gain a full dB on the meter.
I very much like the idea of easily removable baffle. Not sure how you'll pull it off, it's one of the things I toss and turn at night thinking about the best way to accomplish.... I don't yet have any solid ideas yet and the closest thing I've heard of is like this:
Shocker Mike said this sort of thing works well and you have the option to add or remove subs to jump up and down cone area classes. May or may not work outside of SPL though... you see big db drag vehicles run "port" like this but IDK if it can be made musical.