I'd wager a guess that getting players will be the most difficult part by far, at least in the beginning. Make an MVP and focus on building a playerbase first, then come back to architecture when you're suffering from success if you get that far.
> then come back to architecture when you're suffering from success if you get that far.
Then it will be too late because you will essentially have to rewrite half of your project while your userbase is leaving due to unplayable game. Better to make good architectural decisions from the start, and make small optimizations when needed.
