The lenses that stick to you mask may be similar to what
@tursiops is talking about. With $200 you should be able to pick up all of this stuff no problem. A full foot fin is fine as long as you don't need to wear a boot with it. It sounds like you may be doing some warmer diving and I'm guessing don't need a boot. So that would work fine for you. It is definitely a lot of preference. You can try them on in a shop to try and make sure they feel comfortable, but it is hard to know what they are like in the water. You could also get fins used, as long as their condition looks fine there is nothing wrong with getting used. I personally didn't because I have big feet and couldn't find anyone in a timely manner selling used in my size.
But like the other user said, a mask you definitely want to fit well. You should be able to create a seal on your face with it and hold it just by breathing in through your nose without the strap on. It should be able to stay there with just that action. Also make sure it is comfortable and fits well. It would be pretty annoying doing a long dive with a mask that kept leaking water or wouldn't stay on your face right.