For the fountain, you'll need to make PVC adapters to get out of using intex parts. Then you can build the fountain any way you like. This thread is great for making the PVC adapters, and on the last page, currently page 6, there are two cool fountains, so take your pick and customize it for your pool!
custom-pvc-pipe-adapter-for-intex-pools-t28971-100.html
custom-pvc-pipe-adapter-for-intex-pools-t28971-100.html