I'm looking to start up a Birthright campaign, potentially with 10+ Players. I've heard this is more common in regent/ruler based campaigns?

I would like to stay with the original AD&D 2E Rules, but I suppose that would be a lot of bookkeeping? As far as conversions on this site, 3E looks good and 5E doesn't look bad. I will be playing on Foundry VTT, which supports all three editions beautifully. The Seeds of Wars App looks like it would help alleviate much of the keeping of books. Any opinions on editions, war rules, or SoW?

This is all just speculation at this point, but the idea is exciting! I'd appreciate any and all help! I think I am looking for the most tools/advice to make things easier on me