In reply to Joel Perkin:
Can't really offer advice for VS-E1, only done a couple of the harder routes Mercury and America. They were amazing, but totally mental. The classic HVS is the traverse Journey to Ixtlan, which gets done quite a lot. But I would expect it to be fairly stupid!
Most of the other routes don't get much traffic. I would go with someone who's really up for it - it's the craziest cliff I've ever been on, and I've done a fair bit of Gogarth South nonsense like Mousetrap etc. Gowla is South Stack's bigger, badder brother.