No it's not, not even close. You telling me 1 month is enough time to seriously compete for realm first kills in vanilla wow?oO
1 month is not even enough time to get the required gear to ATTEMPT to clear AQ 40, i doubt someone will even try to gather 40 people to attempt it, given that the vanilla realm first kills are utterly worthless/meaningless when you launch an 3.3.5 server.
1 month vanilla is an incredibly stupid idea, most players will level to 60 within a week, get their professions to 300 and then most likely, at least i will, leave till BC gets released and do the same, then leave till WotLK gets released.
2 month bc is also not even close to be enough time to compete for realmfirsts, how do you expect people to require enough gear for T4 content, then T5 content, then T6 content within 60 days?oO
It would be nice if you could give us the actual reason why you intend to waste 3 months of time, if you need the time to script the server thats fine, i won't mind it. But at least say so and don't treat your users as if they were stupid enough to believe this nonsense.