Hi Alex, (nice looking website)
This is a really good question. There are a couple issues to address - let me touch each one of them individually.
Do keywords in your domain help you to rank? Yes, it certainly helps - although the power of exact match domains has fallen over time. There are several ways keywords in your domain can help you
- Possible higher CTR (clickthrough rate)
- *Possible higher rankings
- When you have keywords in your URL, it helps you to earn anchor text links that also contain those words, which in turn help you to rank
That said, recent evidence seems to suggest the power of keyword rich domains is not as strong of ranking factor as it used to be. http://www.theopenalgorithm.com/c...
The Google Keyword Tool is famously misleading. You want to make sure you're searching for "exact match" and "local monthly" searches to get an accurate estimate. Using these settings, you'll find a much, much smaller number for the number of estimated searches for almost any keyword. And that number includes all searches, whereas a #1 ranking usually gets less than 20% of all clicks. Sort of depressing, I know. ;(
You could migrate your old site to your new domain, but is it worth it to change? I can't answer that for certain. If you saw your rankings decrease because of a less-than-stellar backlink profile, then 301'ing your site to a new domain means you are most likely bringing your backlink profile with you.
Your new name (designorlando.com) will likely also be affected by these bad links if you redirect your old domain. It will not have an automatic ranking advantage just because of it's keyword richness. It will still take a lot of hard work to get it to rank.
It's possible, if you "burned" your old site, it may be easier simply to start over on a new one, without 301'ing anything. Either way, you'll have to build up new, high quality links, or clean up your old backlink profile.
Hope this helps. Best of luck with your SEO!