Wow, if this guitar sounds as amazing as you say, with those strings, then it must be really special with decent strings! The bearclaw spruce top is very lovely, too.
I wouldn't sell it, if you like playing it. You'll get a fraction of what it is worth (really -- an older instrument with cracks and repairs will never fetch a good price, unless it is by someone really famous), and it will cost you vastly more to replace it with something comparable (assuming it sounds as good as you say!). But, if you do sell it, bear in mind that repairing it would only add to what you will lose by selling it -- you likely will not make up the repair costs, so I'd sell it as is (of course, I probably would not sell it at all, as I said). Best of luck, whatever you choose!