Being from Pittsburgh, I'd be careful trying to rent out 1 BR apartments in Oakland for 1600 a month. It is almost exclusively a college kid area and Pitt is a state school with lower tuition requirements. The issue is that those 600k 4plexs were only 200k 10 years ago, yet probably bring in similar rent so it's mainly being sold at such a high price to make some fast money. Maybe others have success at those price points but I just don't many non-college people living in oakland who can afford those prices. Personally I'd then focus on supplying temporary housing to Doctors if thats the price I was going for. After all, Pittsburgh is a UPMC and PITT economy.
Vast majority of salaries in Pittsburgh are low with a few stories of robotics engineers earning 250k a year.
The expensive properties are going to be in Shady Side/Squirrel Hill where you find CMU grads staying or a few blocks off bakery square in the nice parts of East Liberty (but you are assuming Amazon, Google, Uber, etc are going to invest a lot more which isn't a guarantee).
The older areas have very sturdy brick houses which can be gutted successfully without having to rebuild the whole thing, and in MANY areas you are not allowed to rebuild as you have to maintain the brick exterior look for cultural reasons.
Anyway just my 2c from a Pittsburgh native