Hi there! I'm so glad you're considering getting a bowfront, I have a 26 gallon bowfront and I enjoy it a lot. I'm new at this, but I've learned a lot, and I can tell you it's definitely worth it. Keep me posted on how it goes!
I would suggest live plants, they look gorgeous and help keep the water clean. I love wisteria especially, but java fern, java moss, anubias, and other low light, easy to care for plants are a great choice.
For decor, I like a natural look, but it's up to you. If you want to go natural, I love the look of cool rocks arranged into caves and driftwood, too.
I don't know anything about angels, but corydoras are ADORABLE. I have some panda corys and they are the cutest things I have ever seen! They're always playing and foraging and chasing each other around. They have such great personalities and they really add life to my tank.
Personally, I like pandas or longfin pandas (the kind I have) the best, but there are tons of other patterns and colors you can pick. If I were you, I'd try to get all one kind, as they like to school with their own kind best, but they may school with other species. That's sort of a long shot, though, so maybe pick your favorite and only get those. As SherLar mentioned, its best to have them in schools of at least 6, but 8 is wonderful. I'm sure you could have 8 in your tank with no problem.
For feeding, mine get frozen bloodworms, frozen brine shrimp, shrimp pellets, bottom feeder wafers, pellets, and vegetables on occasion. They're rather easy to care for and make wonderful additions to any tank.
Best of luck!
~DreamingInBlue