If it was me I would say a definite no to this boat.
The trouble is you are depleting your capital having surveys done.
There are a lot of crappy overpriced boats for sale presently, I am guessing the uncertainty about the future of the canals and waiting for the results of the licence consultation has spooked some people into getting rid in case the price of boats drops.
As you have had a boat before, I suggest you do your own due diligence at a prospective purchase.
Rust, engine working, elecrics working, gas working, heating working, paintwork.The list is quite daunting, but if you like the boat and the price is right,offer up a prayer to the God of boats and go ahead.
I think most of us on here have taken a chance buying a boat.
I have had three and only one turned out to be a bit of a lemon.