questions relating to converting my Private network to paid

Hey, I presently have a private network of blogs ( about 90 sites ) these are hosting on different C Class ips ( for obvious seo reasons ).

I am looking to evolve the network to a paid submission service that drip feeds posts etc.

questions:
customer pays ( which is great ) and..................

What tools do i need to do the job.
I have all the usual ; TBS and bulk posting tools etc.

just wondering if there are obvious requirements........

ah i thought there would be loads of advice lots of people must be running these and dont want to share the wisdom

is the an easy way to automate the orders / keyword inserting etc. i have wprobot etc

I'm not entirely sure, but I don't think the people who do know will tell you given that they don't want to breed another competitor. I would do some test runs... If you get your network up and running shoot me a PM, I might be interested in making a purchase.