PowerStore and webassist extensions

Hi, I have got PS4.5, and I needed a bit of guidance on how to modify last week, and while I was being guided by Ray, he mentioned that CSSMenuWriter does NOT work with PS4.5.

This has had me thinking... I have almost every webassist extension going, so I would like to know which extensions I can use to adapt PS4.5 to my liking without destroying the solution I have bought.

One I have in mind is specifically to do with Digital File Pro. The admin area of the store has several image uploads for a product, a main image and a thumbnail image. What I would like to do is upload images using just one file field, but set DFP to do the upload and creation of both main and thumbnail image from one picture rather than force the client to look for two different images. This is the way I normally go about creating catalogues etc using DFP, but I want to know if this is going to work if I amend the admin pages... will I break them in someway by using the extension?

What about universal email, or dataassist? Can I use them too?

Thanks.

Mat