Yeah, and you have how many hours to play exactly? Do you really expect your "35 guildies" to play a few hours per week to level in classic?
You are gonna play 2 weeks, reach level 20 and then pop back to the active expansion as the majority, you are literally the prime example of nostalgia.
Now, playing WoW Classic as a downtime between raids? I can accept that, playing only WoW Classic, then ye, good luck.
Its irrelevant to me if WoW classic exists, i did everything there was to do when it was relevant, its a dead game for me, i want new raids, new bosses, i couldnt give a rats ass about old content.
If WoW empties out then i will just go to the other games i play, Dota, PoE and whatever new might catch my interest.