You'll need at least 500 hours total time and 50 multi engine, that's the lowest published minimums out there (and that's at American Eagle, FYI). Anyone else will require more.

That means you're going to need to finish all your ratings, giving you between 190-250 hours at minimum, depending on the program, then get some sort of flying job to fill in the remaining 310-250 as well as build some multi time up (you'll have probably 15-30 upon finishing your training, depending whether you do your MEI or not).

It's definitely easily doable in less than two years depending on what method of training you go for. Where were you looking at?