I like what you've said for the most part. just my $.02, I would avoid the closer in round 5/6.
Question: When is your draft?
The cafe usually has a nice "closer thread" that has the leading candidate on every team and the top backup or two for each team. My strategy last year was to wait and draft most of the undrafted closers in rounds 16-22. I grabbed three closers in those rounds. I actually waited till the 8th round to draft a pitcher, period. Granted, I offensively knocked around every team, lead the league in saves, usually lost most pitching cats but ended up winning about every week 6-4 or 7-3. It worked so well that my brother commented he will be usuaing a similar mentality this year..... too bad we always play together.
"When I knocked a guy down, there was no second part to the story."