I give up on the first question [big grin] Never build my own cabinet before. Now I understand why people to fake doors or moldings. We don't have the tools or skills to build it.

But thank you very much for all the details and hopefully some one can benefit from them.
So another question. Did you build your own cabinets and doors? Or is this just to add to an existing cabinet from a manufacturer? Is the existing cabinet painted or stained? Trust me, these questions are for good reasons. ;^)
The panels I made were very similar to the doors and drawers I made so the complete project was done with the same router bits and materials which helps in the consistency department. If you are trying to retrofit, it might be quite a bit harder to do.
Basic rail and stile (five piece doors) construction was used here. The main difference for the larger panels is that I have a center "stile" between the two large panels. I made the rails and stiles out of ¾" maple for durability and the center panels are MDF to be stable and cheap. Of course if you are staining to match, this is most likely not an option. All of the parts got a couple coats of Zinsser BIN, were assembled and then a bath of Sherwin Williams Pro Classic. On one side I had an electrical box to contend with but my MFS helped a lot to route it out.
All in all it isn't difficult but it will depend on your skill set and how comfortable you are. I have a fair amount of handheld tools and power tools that make it easier for me, but with a few basics and some quality s4s wood, you can make them as well. For this project, you will need at least a router table and a way to crosscut the hardwood and panels (a tracksaw will do fine).
Maybe write back with a few answers to the above and we can get you moving. In the meantime here are a few pics of the MFS in action to route that electrical box.
Cheers. Bryan.