Nooo don't get a high tank(personal opinion) More fish prefer long tanks over tall tanks, ad tend to do better in them. Also, you don't need to be tall to see from the topI am planning on buying a tank this size:
24.1 in L x 12.6 in W x 17 in H (61.2 x 32 x 43.1 cm) (20Gallon)
But I will supply measurements for the tank spot tomorrow. (Tank isn't definite)
Will respond to any messages tomorrow
Thanks!!
I recommend a planted tank as they are the prettiest and the best for your fish(unless they aren't). If you plan on getting a 20gal, you could try dwarf cichlids, as they don't really need much, and you can find out a lot about them on youtube. They're also very pretty(try apistogramma) and will breed, which you can sell the fry for a handsome sum. Kribensis pairs are also nice, and may or may not fit in your 20gal (idk never kept kribs).
edit: if you get a floating plant, choose anything but duckweed
just don't get duckweed