What you need is a combination:
Blogs Organizer - as blog backend
Blogs Automater - Posts your feeds with tons of possible modifications to your blogs. Also, this will not stress your server too much compared with using only Blogs Organizer in order to feed your blogs with rss feeds.
Links Organizer - Organizes your link trades and can also rank the hardlinks by incoming traffic.
I use Blogs Automater since a few weeks and I think there's nothing better out there atm! Also the coder is very helpfull and when you suggest a cool feature he'll most likely include it in the next updates...