Omaha odds-question

[petsei]

Could anyone tell me how to correctly calculate the odds of a 17outer against a made set on the flop.
According to my own calculations the percentage of making a straight with 17 outs on either turn or river amounts to approximately 62%, whereas it is about 35% to improve a set to a boat.
How would I fare with this possible straight, if I were calling a potsize bet (being fairly certain that my sole opponent has flopped a set) moving all-in at the same time?
Thanks in advance.