Newb - Chicken or egg?

My first post... so be gentle. I'm in a quandary about general website flow. I'm setting up a site with a squeeze page--> which lead to aWeber double optin--> which points to my sales letter. I'm capturing prospects by an aWeber form with double optin, which is pretty straight forward. My sales letter is where I'd like customers to pay for the subscription service. I'd also like to have these paying customers added to my "paid customer list" within aWeber.

From what I've been told by aWeber tech support, I cannot use a PayPal subscription button as a way to both sign up customers for the subscription service AND add these customers to my "paid customers list" on aWeber. Evidently I can do this with a PayPal "Buy" button, but not with the PayPal "Subscribe" button. Are there any other options?

I did think about adding an aWeber form to my sales page, where customers could simply add their contact info... receive the confirming email... and be directed to yet another page to actually pay for the subscription service. This seems really, really cumbersome.

Is there anybody in the forum who's running a similar subscription service who could tell me how they're handling this? Maybe I'm just looking at it the wrong way.