These guys will spend your money if you let them, Lol
I have been running FE's since the mid '60's and have never had a cam go flat. For your application, a roller cam is not necessary. They require a whole lot of expensive/complicated valve train support parts. I still say with your short block, the ED complete top end kit will work just fine, including the cam. If you are not careful this site will have you building a complete high performance engine. If you don't mind, then carry on, but that was not your original intent. A custom cam is fine, but I would still stay with a hydraulic flat tappet.
I am running this exact same kit on my 440, complete with an Edelbrock 800 carb, pertronics distributor and headman headers. It is simple, no special maintenance required and they work. I like it....
Nick