Basic Rolling Workbench Build

For running my small business I need some work surfaces. While I could certainly buy some kind of fancy tables, I decided to make small, rolling workbenches. They will be constructed entirely from standard box store 2x4s and OSB plywood, nothing fancy. For screws I'll just use what I already have, standard 3" construction screws. I bought casters (wheels) that support 1600 pounds of weight per 4 piece set. More than enough for these workbenches. In my brainstorms for design, I came across a video made by Youtuber, Matthew Peech. Check out his channel if you are interested. Here is a link to the video I used as inspiration: https://www.youtube.com/watch?v=VVtfASmg2ms. I'll use different dimensions, but the core idea will be the same.