To answer your question, I would add up all expenses and expected income in scenario #1 (you rent your condo, live in a new house, and then move back to the condo after a year) and compare that to the expenses and expected income in scenario #2 (you stay where you are, buy a rental and collect rent). You're looking at money spent relative to money earned. So scenario #1 includes moving expenses, the delta in utilities and however you want to value your time for the hassle. Be thorough, get all numbers and add it up.
That said, personally I would advise against buying a property as a residence that you know you won't live in for more than a year. Any conventional loan (i.e., not owner financing) will make their loan contingent on the occupancy type you indicate. So you would likely be breaking those terms, which is illegal. I know people do it, and you likely could and never get caught, but my view is "breaking the law" shouldn't be a business model.
The other thing I would suggest is to think about these things separately. i.e., what is your ideal house where you want to live? and what is your ideal rental? Usually, those two things are quite different. If you "do both right," you can maximize returns AND be very happy, rather than get a good return and grind through quasi-happiness. Maybe it's just me, but I am tired of living in investments :)