Getting ready to remove the chimney

The truck took longer than I thought, but it's mostly done and running much better now, so I should be getting more done again.  When I was waiting for parts (again) I moved a bunch of the old wood that was just sitting in the upstairs that I definitely would not be needing for the rest of the upstairs into the basement.  So here're some pictures of that

In order to take out the chimney, I'd need to vent the water heater out the side of the house.  Since this is a normal gas one, I'd need an active vent to do that.  Since I don't want to be investing money in that, I decided to get a cheap ($150) tankless one to hold me over until I redo the stuff in the basement.  I plan on installing it next weekend.  Funny thing, all the stuff to hook this thing up is costing as much as the water heater...