Create it with all vector tools and save it as layered psd file. Using that document you can size it any size you need to have your logo and save out a png that needed size
Use the text Tool to create two text layers a bib M and map to success. Positopn and size them relative to approximate what you want your logo to look. Convert both layers into shape layers. Edit the big M shape using Photoshop ]Vector editing tools to stylize you M more. When your satisfied Target both Shape Layer and merge them into a single shape. Define a custom shape for that shape path and you will have your Logo as a custom shape you can drag out any size.