Welcome aboard. I used a generic light duty back blade (7' I think) for snow removal with our 8n for years before we got the Kubota. It worked fine for the most part. The main problem was the lack of live hydraulics, meaning when you have the clutch in, you can't lift your blade. Not the end of the world, and it sure beats a shovel, but not the best tractor for the job.
In answer to your question, though, if all you're doing is snow removal, the cheapest one on Craigslist should do the job. Especially if you know how to weld.
Good luck!