OK, so... creating a blog network.  All of them on separate domains and unique class C IPs, all with different name details on registry, no affiliate codes shared. Nothing to let any search engine know they are all owned by me.  Now,  I interlink them to boost the juice, and link them all to the paysite.  Here is my proposed diagram if I only had 8 blogs:
 
Basically blogs 1 & 2 would link to only blogs 3 & 4 and the paysite.  Round and round it goes.  But am I being too careful here?  Should, perhaps, I link them back and forth more to increase inbound links on each blog?
(By the way, I created the chart at lucidchart . com, it is pretty handy.)