1,2 - The store is only a few months old, I have quite a few products listed, too many to "quickly" make a new site.
3,4 - The domain is equally a few months old, as is the blog.
5 - according to sitemapdoc.com not very well at all... I have checked one of my long running sites and that doesn't fair well either to be honest.
6 - quite good, I'm relatively familiar with wordpress, installiing and altering themes etc and i used to make sites from scratch in HTML. I'm by no means a web dev. but I get by well enough, however I have only just started looking into SEO practices and am gradually applying them to my sites.
I chose EKM because it seemed a good solution, it does work very well and takes a lot of the effort out, I seem to search well in google shopping results for most items. EKM does have a few downsides with the blog being one of them, I know they are working on it but doubt it'll be any time soon.
I'm thinking maybe it's best to keep the blog going but add some pages to the website with guides etc to help add some content. I haven't tried it yet but I believe I can add as many pages as I want to the EKM powershop. (i think!)
I did look at wordpress e commerce solutions but they looked a lot harder work than the hosted solution.