How long will this take? and anyone got a quicker way to get it up than lobbies?

its like 7k lobs till 76 and it takes mine 7 - 8mins per inv. in most worlds. 5 sometimes in w6 and w2


could anyone advise me where to go? i heard shillo vill good place. and i have not done quest. but need to for legends. so mite do it.