I've just come back from spending 3 weeks on the Valkyrie - absolutely loved it. A very stable dive platform, a brilliant skipper and a the best crew on the planet (IMO).
Every time I surfaced the Valkyrie would be there in just the right the place shielding me from the weather and ready to pick me up. The lift is a superb addition to the boat especially when diving with twins, stages and a scooter.
Saw basking sharks, seals and dolphins but they didn't get in the way of the wrecks too much
Anyone who is thinking about this trip should just go for it - it is a beautiful part of the world with some of the best wreck diving on the planet.