I was thinking of going to the BoS bunker for EDE's and Victoria's quests, but I know that later on in the main quest (doing an NCR playthrough) you have to go and find them and you can ally with them.
My question is: what happens if you do the BoS quests and become a member (or some such) before the main quest takes you there? When you get the quest to eliminate/get their support can you just go to the bunker and ask for their help right away, or does doing their quests beforehand break that option?
I hope this makes sense.

Thank you.
Itkovian