Yes, let us know if you need any help brainstorming a name.
Try to use something that will already be favored in search engines for relative searches, with the words, virtual, assistant, administration, office, service, secretary, etc.
It will make a world of difference in your site being returned higher in search results for someone looking for a VA.
Regarding the blog program - it is a fabulous one! My husband actually built that for me so that I could have a blog program for myself that would be totally customizable - because I'm always changing around my own website designs - and of course we realized it would be a great tool to install for web design clients.
There is a great support forum for the blog program, if you just go to the front page of the site
here and click the link for support forum in the main menu - you can post any and all questions you have about how to set it up and get a quick reply. And yes, you can move the blog from the PHP Blog Manager host to your own website at any time, so you can get that part of your website 'set up' right away
Having a blog on your site is a fabulous way to add content (brings the search results up that much more), great idea! As well as keeping clients abreast of what you're up to, and providing 'free' information to potential clients.