100 dex is a bit overkill. vit will definitely help in levelling. but if you don't plan on pvp/woe, u won't need that much vit.
as for sword mastery, skill descriptions and stat calculators have been wrong a couple of times. even more so when you start going into the differences between freya and eathena. thanks devs!
yeah a quad andre would be awesome if you can afford it. definitely worth it compared to haedo