Being that it's your first brew, and assuming you are as impatient as I was (am), go ahead and keg it. The gravity looks good.
On the other hand, leaving it another week in the secondary will allow more junk and yeast to drop out, leaving your beer clearer, and less yeasty tasting.
I usually let my beers sit in secondary for 3 - 4 weeks before bottling. No kegs yet for me.