Keep everything in the building as flexible as possible, you will likely do major rearranging every couple years. As others mentioned infeed and outfeed areas are very important. That is plenty of space for the equipment you are running but it does fill up fast. Just keep everything as organized and mobile as possible (everything on wheels) for the most flexibility. My suggestion for basic layout would be like this:
1. Linear flow from garage door to opposite end with equipment and storage between garage door and man door.
2. Substrate storage and cutting area just inside the garage door (you will want to cut a lot of substrates outside as much as possible to keep the mess down)
3. Tool and ladder storage just inside the garage door for easy loadout
4. Keep everything messy as close to that end of the shop as possible
5. At least (2) 4x8 work tables (on wheels) one for infeed and one for outfeed with room for your laminator in the middle. Also a banner hemmer uses this space if you plan to do those. I would position this "production line" going the long way down the shop closer to the far wall with enough space to walk all the way around. Also building tables with storage for your production tools saves a TON of time and space when in production. Basically try to eliminate having to take more than 5 steps to get any tool needed during your regular day to day production tasks. Developing what you like for this space will come with using it everyday, small changes can make a world of difference. This is where you will spend most of your time (besides the computer) so look for some good anti fatigue floor mats.
6. Computer workstations, printer, plotter and media storage arranged at the man door end. Again it is critical to keep these as fas as possible from the mess. When finishing interior keep in mind easy cleaning weekly (again everything on wheels when possible)
7. Getting creative with storage can make a small shop very practical. We operated similar equipment plus a small cnc router for engraving in an 800 square foot converted garage for many years before expanding to our current 3000 square foot space. Wall racks and pallet racking can be very versatile for workbenches and modular storage.
8. Depending on the amount of vehicle graphics you do, and if you have other areas for installation (your attached garage) you will want enough space inside the garage door to get a crew cab truck in and walk around.
These are some basic ideas from my experience. Its very similar to setting up any dedicated workspace, concentrate on what you plan to be doing 80% of the time and make that as efficient as possible. Chances are the other 20% of activities will find a way to work without much hassle. Good luck!
