Simply just as the title states. If I buy the vanilla wow 1.12 version will I still be able to access the other download sections? If I buy the most expensive version, will I still be able to use the vanilla 1.12 version? Trial seems to work great for what it does. But can't download solid class profiles as the ones in vanilla download list are not complete. So I wouldn't even need to buy it if I can't use the other class profiles outside of the vanilla wow section. Thanks.

To run it on vanilla - you need the Wrobot for private servers.

And private servers is anything besides  legion.

The fightclass, needed to be made for each version of the game, as a lot changed between :(