pick the best 3-6 names according to domain,traffic, profitablity and competition and make 3-6 quality sites as opposed to trying to take on too much would be my advice. You can get hundreds of junk sites up and 3 very good sites would pay more and be alot easier to do. When the first few sites are earning well you can rinse/repeat with your profits if applicable.
If you do want to develop alot of sites then i know a webdesigner who will do them very cheaply who i can pass you too. However i really think that you would benefit from concentrating on a select few.