Using a Portrait film for Landscapes makes about as much sense as using a Landscape film for Portraits. It doesnt. Use Kodal E100VS for Sedona. VS was designed for Sedona, and will give Fantastic results that will be jaw dropping. If you will be photographing a lot of people in your shots, use E100G. Portra was designed for, well, portraits, and will make that vibrant landscape look dull and desaturated. Ya, you can fool around in Photoshop to get it to look half decent, but it will never match E100VS or E100G.
There is a very good reason all the Pro landscape photographers used Slide film, and E100VS and Velvia in particular to capture all the great calendar, book, and gallery shots of classic landscapes like Sedona for many years, until they went dig**al. They had Portra and similar films available, but did not use them. Because they will give sub par results when pressed into landscape use, wheras slide is optimized for landscapes.