I doubt that there are more than fifty cross-stitches left to fill in. That's not at all bad for a full coverage piece I never thought I'd finish! But figuring out what colors go into those isolated spaces is going to be hard.
That bush at the far right hand corner of the house may be why I abandoned this project in the first place.
There's also a fair amount of back stitching to do (and it's not the kind that I could get away with leaving off) but I'm working on that while I avoid filling in those last few spots.
This project could be the perfect candidate for the "fifteen minutes a day until it's done" method of slogging through to the end.