what ive gatherd is you need is a software that can start a download according to schedule, stop after it finnishes and disconnects for 5 mins, then reconnects and start downloading the next file....I havent yet come across any soft that can do that and i doubt one exists which can work properly....Then the only sollution would be a premium account
I have one and it really is worth it, i dload about 35-60gigs a month no hassles and excellent speeds, you can try and get an account cheaply in the bazaar section of this forum