Aweber Follow-Up Sequences

Hi Warriors

I've been very stupid in the last few weeks. I've been building quite a substantial list of buyers in a new list in my Aweber account, but due to other commitments (such as university exams) I haven't had time to create a follow up sequence for these buyers.

I've got a list of nearly 500 now collected in the last 2 months and the only emails they've been receiving are my broadcast emails.

I want to set up a follow-up sequence for all new subscribers, but I also want the sequence delivered to existing members with the same number of days between each message as specified.

So, for example, I want to add a follow-up message to go out 2 days after people subscribe, but I also want that email to go out to all existing subscribers 2 days from now.

I then want to add a message that goes out 5 days after someone subscribes, but I also want it to go out to existing subscibers 5 days from now.

I hope that makes sense?

I've seen marketers have nightmares when adding a follow up sequence to an existing list where all the emails are delivered to all subscribers at the same time and I don't want to risk doing that to 500 buyers who could prove to be worth thousands of dollars for many months to come.

Any help would be appreciated.

Thanks,
James