So I've currently got 3 accounts.

1 has WotLK and is my main account
2 is a second account I've been dual box RAF leveling with 1
3 is a third account i'd like to introduce to be instance boosted with either 1 or 2

1 is RAF linked to 2 and 3
2 and 3 are not linked to eachother

My question is: could I have 2 run 1 and 3 through instances for 300% xp? Or have I bojangled the setup too badly for that to be an option? If so, is there any other way for me to instance boost with this current setup?