KLARNA Payment form - Subscriptions and recurring

We are going to sell 2 products as subscriptions and one normal product on our website. 

We need help with building a easy payment form that is integrated with klarna payment service. 

It is also important that we can administrate the orders somewhere. 

And also  create a cycle in the store so that the system checks for subscriptions every night and it automatically creates orders in admin and sends it to the payment service KLARNA

We want the front-end result to look something similar to this webpage (no cart only one page form): http://www.giboxen.se/Bestall/

We have nothing against open source solutions, and are used working with these, BUT we only have 2 - 3 different products and just want a payment form, no cart or extra steps.

So if you are confident doing this with: virtuemart, magenta, wp-commerce feel fee do bid but we only want one page form no catalog, cart, information. We will probably use an iframe to import the page to joomla.

We have great front-end developers so no need for styling. (only classes and id needed)