Hey Jake - Good progress... The pictures make you boat look GREAT!
It is a shame that the boatyard goofed and let the water accumulate - maybe they'll be willing to do a bit of clean-up and some restoration work to make up for this...

The sole is likely teak (as it is in all other boats I've looked at) and will not suffer at all. The rest is coated/sealed so the outcome will be more inconvenience than damage. You won't be able to tell that there was that much water in there. Most boats get water int there at some point or another. but getting it dry via a fan is a good idea.

It is possible that a dehumidifier might pull out the moisture a bit too quickly and might cause some problems (??)

Good luck! - you are much closer to getting C-131 in the water!