I saw your post and thought I'd chime in, despite not yet being "an engineer." Based on the course names you provided and the option tracks you listed, I suspect that the EcoE program I'm in is actually the exact same one, so perhaps my input will be beneficial, if only slightly.
First off, the program is indeed ABET accredited, so yes, after graduation, you would have a "real" engineering degree.
The focus of the Ecological engineering program vs. the environmental engineering program is indeed far more biology/ecology-based. I know environmental engineering wasn't anything you said you were interested in, but, for what it's worth, the environmental engineering minor overlaps so thoroughly with several of the EcoE option tracks, you only have to take one or two additional classes to complete the minor. May or may not make a difference to you, but definitely worth noting.
I'm not sure if the environmental science degree you are also considering would be at the same school or not, but if it is (and likely elsewhere), it would be a significantly less "technical" degree---much less math, physics, etc..
I am by no means a professional engineer, but from what I understand (from relatives who are engineers, former classmates, and so on), having the little tag "engineer" suddenly makes you more marketable, jobwise. Obviously your mileage may vary, but I've got a lot of former classmates and acquaintances with less technical degrees who are still unemployed and claim their degree is about as useful as my first degree (liberal arts).
Hope even a little of that was useful!