WFB is a one off deal and yes it can integrate with PayPal NOW I am not affiliated with CC just use a lot of their software. So if you buy a copy I will show you how to do it. Then when the upgrade does come through you can always change over. Did you in fact look at my demo's. If you really are a Web Designer it would be a piece of cake to understand what I can show you. But then if you see the output you should be able to do it yourself.
I visited your site sure is nice and colourful. a WFB form would fit in a treat and do just what you want.
If you have the HTML Editor then you could create your own form to suit with PayPal integration. Takes a bit longer but no problem it inserts basic form elements for you. I may do a demo of that in that forum
Easy Peasy just not as easy as WFB. Yes I admit it we have an unnatural relationship WFB and I there I am out of the closet.