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I think your plan sounds fine. When using a controller I like to wait a little while for the egg to get stable before I hook it up, otherwise it will overshoot initially (at least mine does). So get the egg somewhere close to your target temp and hook it up. Make sure the flame boss thermometer is over the plate setter.
Just my $.02 but I wouldn't inject it and use coffee. I just think that might be overdoing the liquid.
...so I would just follow this. Smoke until 160, wrap with foil/coffee. Cook it to about 200. The only thing I would suggest is instead of cooking it to 200 start checking it around 190-195 for tenderness. Once it probes like butter take it off. Once it is done I would unwrap it and let it rest a bit. It is easy to overshoot the finish if you leave it wrapped in foil. If needed you can FTC it but unwrap it and let it cool a bit first. Good luck!
Man that looks like a nice table. Can you not incorporate it into your deck? Just throwing this idea out there...what if you added section to your deck and then raised the roof on the cooking table if needed so that it overlaps your deck roof? This would hopefully allow the smoke to vent out over the deck roof. Please refer to this professional auto-cad drawing.