Good. Get it and start riding some singletrack.
Wouldn't the 30.6" standover height be a problem?
You could probably make a bike like you want from a modern MTB frame, but it would be a compromise. The 17.5" Mendota seems to be the closest you have found to what you want. It has 2" lower standover, 1/2" shorter top tube, tighter geometry...
Maybe you should contact someone like
Curtlo and have a frame built just for you and for what you want to do with it.