One correction - funds converted (at any point) in 2025 would be available on January 1, 2030, not 2031 (perhaps in reality January 2 due to closures). It's based upon calendar years, and it doesn't need to be more than 5 years. Technically, you could access some of the money after 4 years + a couple of days, if you converted on December 31, 2025. I wouldn't actually recommend cutting it that close, but you get the point.