I'm needing a little guidance on a project I'm working on. I've set a meter pole with a 200 amp meter base/disconnect combo. For service into the meter base, the utility company specified 4/4/2 aluminum wire. This pole is for power to my shop building which has a 200 amp subpanel. The distance the wire will need to run is about 10 feet. I'm not sure what wire I need to run from my disconnect over to my subpanel. The 4/4/2 seems really large to try and get into my subpanel.

I have been remodeling my attic to a bedroom. When I ran a new circuit for my microwave, I ran 2 more wires that would go up to the attic. Tear a hole in the wall once... I have yet to find a reason why I can't do what I am about to do. But to double check I want to get an extra set of eyes, just encase I am missing something. I bought [URL="https://www.amazon.com/Cadet-Manufacturing-05536-Baseboard-1500-Watt/dp/B000SP4DY6"]This Heater[/URL] for the room. So I ran a 12/2 wire for that. Then I put in 8 new outlets and ran 14/2 for them. The attic already had a light in it. So I converted the 1 light to 4 can lights. Pretty easy. But here is my breaker box setup. My main panel is already full even with some old tandems installed. And my subpanel is full too but supports tandems. The only work I have done in the panel so far at the house is put in the tandem in the subpanel for my microwave. My plan was to convert a single 20 amp to another 20 20 tandem in the sub panel for the added heater circuit. And then convert another one of the 20 amp breakers that are in there now, that only has 2 outlets and 1 light on the circuit to an added bathroom, to a tandem 15 15 breaker that will have the 8 outlets I added. All seems correct right? Not missing anything?