Welcome to the Q&A Forum

Here are the steps I would take:

• Wordpress is a great CMS for those who are new to CMSs. It's free, it's easy, there's great a great support community.
• Find out which pages on your site are getting traffic (check your analytics)
• Determine which pages on your site have inbound links (SEOmoz has a great module for this)
• Copy the content on these pages to your new site (inside wordpress, or whatever CMS you end up using)
• 301 redirect the old URLs to their new home inside Wordpress
• Create a sitemap for your new site

There is no amount of posts / day that makes a website look natural. 1,000 per day looks as natural as 1 per month, given the content of a website that produces content at either of those respective intervals.

As Keri mentions in response to your other question about auto-posting: the key to great SEO results is well marketed, great content.

Yes it does, more info from Rand: http://www.seomoz.org/blog/international-seo-where-to-host-and-how-to-target-whiteboard-friday

It won't create a penalty per se, however search engines will be truncating your title tags with a '...', meaning you don't have control of how your title tags look. You're better off trimming them down to something shorter and meaningful, knowing that the appearance of your meta data on SERPs affects your CTR, which affects ranking. Plus, the extra 70 chars aren't helping you, because Google isn't indexing them.

You're right, it's not necessarily count of links / day, link quality and other factors (like exact match anchor text) play a huge role. If you're building with quality there can truly be no magic number. Check out this post with lots of great link building resources from Point Blank SEO: http://pointblankseo.com/link-roundup-november-18-2011