Tip/tricks for cooling garage on ranch-style home?

[Great-Kazoo]

I'm circling back around to this now that I'm retired.

I'm thinking of doing the insulated garage door but wondering if the bang is worth the buck? Has anyone here gone from an uninsulated to an insulated garage door and was it worth it?

I'm guessing new garage doors (3 car garage with 1 16-foot door and 1 - 8 foot door) would run at least $3000 - $5000 installed, yes?

One reason I'm thinking of going to new garage doors is that it would give me a chance to get doors with windows in them. Right now the garage has ZERO natural light. No windows, and no windows in any of the doors.

When we lived in Littleton our garage never got this hot, but then again, that was a tri-level home and had (cooled) living space above the garage. I'm still thinking I've got to find a way to get the hot air out of the attic above the garage.

The other morning when I left the house around 10:00 AM it was already over 90 degrees in the garage!

For the mini-split AC, how much power do they use? We're already having high electric bills from AC use, and we don't use the AC all day (I typically turn it on around 11:00 AM - noon and turn it off around 8:00 or 9:00 PM depending on how cool it is outside.)

Before you replace them. keep in mind. Windows are an invitation to any curious people. As for the doors themself. Buy some of the foil insulation kits, cut to size, call it good.
We have some cheap thin wrapped insulation (1/4") left over from when they built the shop. It works very well, but it's also not in direct sunlight. However when it's 100+ you don't have any heat radiating off them if they were still bare metal.

As for natural light, the 12+ 4' LED shop lights, along with the walls painted semi-gloss white are more than adequate, illumination wise. If you want windowed doors, consider the crime rate for break-ins in your area. Windows are a magnet for the uninvited.