If you are going with a C pack why would you want to upscale the Scout, to try to make it slower? It is a great plane for beginners at the size it is with the C pack. I used a motor that was most considered to much for the Scout and it was fine, at original size. If you are new upscaling does add complications to the build but is unnecessary to do so with just a C pack. Just because it is one of the largest pack FT offers doesn't mean it is overpowered. The Scout will fly on the B Pack 2212, but just barely. The C pack isn't really much of a step up, it is noticeable but not in the grand scale of it all. I would suggest to stick with the original size and just fly it. You will learn to fly just by crashing, a lot. No matter what size the Scout is, you will crash it, over and over again. At this point the size won't make the difference. Trust me i went through so many planes over the past year in the hobby. You should check out my YouTube channel you will see how much I crash and how many planes i have gone through. Not to say that your experience will be the exact same as mine, but you will probably be doing repairs before you even knew how it happened for the first few times out. Just my 2 cents