I think you will be very happy with it.
For small cooks, like a meat loaf or some appetizers, make a mini-WSM kit for your Smokey Joe.
And, you can do a small roast or a single rack of ribs on the 22.5 OTG with a small amount of fuel.
Or, add a rotisserie kit to the kettle for even more cooking options.
Being winter in MI, you can also do some cold smoking on your new WSM by making a tin-can and soldering iron smoke generator for about ten bucks.
With the grills/smokers that you will have when the new WSM arrives, it is amazing what you can do.