When I bought my first pixels, I also bought 5 foot extensions. Cut them in half, plugged on side into the controller and soldered the other on the pixels (this was before built-in connectors were popular). The 2.5 foot pigtails worked out well for me.
That'll do it if you are running all the power through the timer. But isn't the timer just activating the DPDT? I am not even an amateur at this kind of thing but you shouldn't have much else connected to the output and would doubt the DPDT switch would need more than 1A to actuate. A 10 amp...
First thing is that blending static lights and pixels is really hard. The pixels will be moving and changing color and your static will be well static. The static will wash out the pixels unless they are "outstanding". So, concentrate for now on making something that competes on its own (like...
Yes, use the link Indigogyre posted. It will lay out the "lights" side pretty nicely.
You will need an enclosure of some kind that largely depends on the type of panels you choose.
The pixlite doesn't really care except for running a test. In a show, it is just bytes of xx protocol. You might have to make sure the 4 bytes are being managed correctly.
Do you see the eyes at night? The two with the eyes up look odd at night? Or would you suggest keeping them below the lid?
BTW - great job on painting them. Love that traditional bulb look. Do you usually stick with same color for body lights or can they still be mixed up?
Do you have the bullets? I would go seed for a new mega tree. You can get more density in both directions. 3 meters is nice length to start with.
If you go 50x16 (pretty standard size from a few years ago), you can do it easily with a 2 port controller. So almost any controller to start with. A...