The accelerated program is 16 consecutive calendar months, so I think it would be considered "less than 2 years" and that your PGWP would be for 16 months as well.
If you could manage to complete your 1 year of employment within that time frame, you would qualify for CEC (although you might have to go home while your CEC application is processing, because - could be wrong - but I don't think you could get a TWP to extend your stay after your PGWP expires... this would not affect your eligibility, but it would be disruptive to your career).
If you chose the 6-semester (2 year) program, that would probably get you a 2-3 year PGWP (but of course, 2 additional semesters of tuition is the problem).
Have you posted this question in the Students forum? They may have more knowledge of PGWPs...