Unless you are deciding between crop or full frame bodies, the body isn’t really what you should be concerned about. Since you are not a professional, go with a crop and you will be happy. All of them take external flashes and a tripod mount, and you can set your settings manually. The differences are in the shutter speed, how high an ISO they handle, the weight, battery life, megapixels (unless you want to print posters, all of them will do), etc etc.
Lenses are another story. You have so many to choose from. A 50mm is not good for landscapes, and a zoom is not either. You’ll also need a better zoom lens to shoot airplanes since a 250 mm won’t do. For macro photography, you will need a macro lens. Especially my 50mm 1.4 has issues zooming in close-ups.
I have a 50mm 1.4 which I use for portraits, a 70-250 which I use mostly for action shots but it is good for portraits too, and I have a Sigma macro which I haven’t used much because macro photography isn’t really my thing. I have trouble, depending on the setting, shooting airplanes, birds, and landscapes. Airplanes and birds turn into blobs of different colors, and I can’t catch the whole landscape because I can’t “zoom out” and moving backwards isn’t doing the trick most of the time.
For what you want, one or two lenses definitely won’t do. A 50 mm 1.4 is a good start, but it is slow and has trouble focusing. If I were you, I wouldn’t buy a lens for now. Get a camera and play with the kit lens. Learn your settings and in the process you will decide what you want to do and which lens to buy next.
Beware though, photography is a hobby that can get too expensive too soon!