I think the perfect snake for you would be a rosy boa!!! These guys stay small (2-3 feet), very slow-moving, very tolerant of handling and forgiving in their husbandry, come in all sorts of colour and pattern variations, etc. Even people that are afraid of of snakes don't seem to have a problem with rosy boas
Irian Jayas usually reach lengths of 4-5 feet, some females may exceed 5'. Corns reach the same length, but nowhere near the same mass. They can be good beginner snakes, I personally don't like em. I find them to be too skittish and quick (like all colubrids...yucky!