Those are just the beginnings, though with such a brief description of what you know, I can't be sure that you have the finer details of that knowledge correct.
The meta keywords tag is not worth worrying about.
Layout hasn't got much to do with ranking, but having clean code might do.
As for linking, cross-links, link farms, and reciprocal links; these are not worth chasing. Link for traffic and relevance, not for PR.
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