Coco,
Are you kidding? Where are my spurs? Turn off the TV and get it finished. What is the hold up? That bike ought to have all the bugs worked out and should be in a fine state of tune come Spring. What do you need to finish it? It was close to being finished back in July! You can't make a career out of this project....you still got a Sportster to build. C'mon....shake a leg. Wouldn't you like to crank it once a week rather than a dry kick it over once a week? If there are issues to be addressed, wouldn't you like to know it now rather than waiting until Spring. Sounds like builder's block or burnout to me....work through it.
Seriously, besides a little labor, what do you need to go ahead and finish it? Did you get the wiring done? If not, let me know what you have/how you want it and I'll put to a wiring schematic for you.
Don't ask Matt how to preserve the engine over the winter, ask him if you ought to getting running now or in the Spring.
Z