Flash program changes and UI redesign

I'm trying to make an online book cover design tool. The closest I've found is this one: [login to view URL] But I'm not sure, if I buy it, how easy it will be to make changes. I will remove a lot of features (about half on the left side) make the buttons bigger, and I'd like a cleaner interface. - I do need to add in more fonts (either adding more into the program, or using system fonts). - I would like to add a feature to increase spacing (kerning) between letters, if possible. - On the bottom right, there's "alpha" (transparency), I'd like to add a slider, rather than the input fields. If possible, add a vignette style and language options (like in this sample: [login to view URL]) If possible, add a pattern overlay on text (like this sample: [login to view URL]) Is it possible to use a UI from graphic river? [login to view URL] [login to view URL] If I redesign the interface with background and buttons, can you use them? So, I would need some changes, a new UI if possible, and help installing to hosting. Thanks