Brian,
Hi. Well currently the module only supports Authorizenet and we are reviewing offering the ability for gateways such as Payflow Pro but I believe the very next gateway will be standard PayPal.... We do offer enhancements and customizations at an hourly rate of $90.00 per hour with a 5 hour minimum. I would have to review the code more to see if this implementation would fit within the minimum. Otherwise this will probably be added down the road, only depending on your timeframe of when you need it etc... If you do wish to purchase development hours you can contact us directly and we can discuss payment arrangements etc...
-Chad