I might be wrong, but am sure that google will not like the idea if your homepage is directed from another page... Google picked up my site from this forum and the link was something like
www.domain.co.za/wb...
I have a re-direction to another domain while I am finalising the site in the wb folder. Two days after the site was indexed in the wb folder it was removed....

I think, as soon as my site is completed, I will need to move it to the root folder to make it MORE google or SEO friendly...