You might want to consider a lycra skin. They are great protection from the sun and small jellyfish, are weightless and fold into a tiny ball. Inexpensive and simple to use. There are many, many first rate equipment brands. Fit is by far the most important thing, especially for masks. A good defogger is useful. I use Spit (the brand name) but there are many others. Get a simple snorkel without bells and whistles, one that is light and comfortable. A mesh bag to carry everything should complete the kit. I've been a snorkeler longer than most people have been alive (60 years, since I was 7 yrs. old) and have used this basic kit all over the world.