Lord of Vermillion and Meteor Storm skills can also be good skills for partying in Nameless. However, I would chose one or the other to max out, instead of having them both L5. Lord of Vermillion is useful in Rachel Sanctuary if you plan on soloing, or even partying there. At least that's the skill I chose out of the two. I also got SP Recovery, but only to like L4, since we already have a lot of SP to begin with. Any more questions?
PS: All my bolt skills are L5, with Fire Wall L10 and getting Quagmire maxed out. Storm Gust is L10 for me as well, for Nameless of course. However, you can always go a different way. It's not a bad idea to max out Fire Bolt. However, I didn't.
PPS: As for stats, I'm maxing out DEX, for faster casting, and getting a lot of INT, yet not maxing it. Only because I'm going to put a few stat points into VIT, since Wizards have extremely low HP, and it'd help not dying all the time.
Hope that helped.