I feel, judging from your experience, that you may be pushing it a little too much. Any climb at 18000 ft is a serious climb. I would recommend taking at least one experienced person along. Reading summitpost pages, or even Freedom of the Hills (a very excellent resource) will not suffice for actual experience. Part of being experienced is knowing when to turn back, which is crucial in such an extreme climate. I learned this lesson the hard way by being involved in a serious climbing accident that put a close friend in a coma for 5 weeks. That is not how you want to learn. Taking a mountaineering class is much less emotional traumatizing. Start small and work up.
You should consider trying a less extreme climb. Mt Adams in Washington state would be a great alternative. i have introduced several people to mountaineering on its slopes.
Best of luck whether you continue the climb or reconsider,
Jeff