Oh My word! 190 years old! That's awesome! Yes you need to save some of that for furniture.
Wow,That is one big Oak. I have a portable saw mill and I'm sorry to say, it's really hard to sell big slabs like that. It takes just the one person that will pay big bucks. I know a guy in NC that specializes in live edge slabs. He has many that big and bigger, and they have multi thousand dollar price tags. But, many have sat in his shop for years. So, when one finally sells, he gets big bucks for it, but he doesn't sell many. Just like Black Walnut, every one thinks they can put their kids through Med School with a couple nice BW saw logs. The raw timber isn't worth that much, there are many steps in processing the wood, each step, the price jumps, to the finished product being the most valuable. I have some beautiful, heavily figured BW that has been air drying for about 5 years. No offers at $100 per slab. I use one for a target for my throwing axes. After all that negative advice, if you find the one person, it has potential. The biggest log I could mill was 52", but I sold that bar, now the biggest I can do is 45". Here's a couple pics of possible projects, Joe.
Live edge work bench from Fir.
Live edge, bark on, mantle piece, Red Oak.
Dawn Redwood mantle and shelves.
37" Whit Pine milled off my farm in WV, then made into a fold up table in the bunk house.