Good advice, Ron. With traditional plastic package LEDs, a safe nominal current value is usually 20 milliamps. Many of the high brightness type will take more, but 20 ma is unlikely to damage any LED you find. I don't have enough experience with SMD types to even guess, let alone COB. The safest method is to measure the current they use in the original application, and either calculate an appropriate series resistance to maintain that current, or determine it by experimenting with different series resistance values while watching with your meter. Don't forget that if you change the device's heat sinking, you may not be able to maintain the same current. I add, however, that the typical $3 dollar store solar garden light has no current regulation at all. It doesn't need any, because it uses a single 1.25 volt cell (usually nickel cadmium of about 300-400 mah) driving an LED with a nominal forward voltage of a bit over 3 volts. Hey, what did you think you were going to get for $3? You can also use a regulator IC as a constant current LED source, but that's more effort than something like this is probably worth. A sidebar. I've read that the reason you see so many cheap Chinese made products assembled with lots of screws - and even with hand-soldered circuits inside - is that labor is cheaper than machinery in China. Tesla electric vehicles are built largely by robots. Geely and BYD EVs from China are probably mostly, if not entirely, hand-made.

I don't know about the heights, but I was looking at the placements. I like the ones in the front, I think. Their placements seem logical for safety lighting purposes. The ones in the back, though, I'm not so sure. What's the purpose of the ones in the trees all the way in the back? I could understand if those two were to be up-lights on the trees . . . .

There isn't really a "best". At this point, each tier of price/quality has multiple options. When we do a lighting design, we use a mix of manufacturers because mfr X has the transformers we like mfr Y has killer pathlights, mfr Z does great bullet lights, etc. If you're doing the install yourself, I would suggest working with a supplier who offers several lines who can advise you on what's best for each application. If you're having a pro install it, they should have a bunch of manufacturers they pull from depending on the purpose of that fixture.

Your visitors need to be guided to your front door. Take out the overgrown shrubs and, as has been suggested here, re think the sidewalk to your front door. This can be done by widening both the bed in front of your house AND installing a wide sidewalk (modern paving stones) to the right side of your home. With planting beds on the street side of the pathway. You might consider low level lighting, too, to guide your guests to the right door. As has been suggested…placing your house numbers in a more obvious place, making them larger, and lighting them will help people see where they should enter. Have you ever considered creating a gate across the front of your carport? One that could be opened (or even have a small gate for family access) so that people see that area as “private?” Just a thought. Note: Installing a sidewalk to the street in front of your home, as some have suggested, only works IF your neighborhood has sidewalks. Many neighborhoods do not have them.