I'm wanting to buy some Rockets playoff tickets and was wondering if stub hub was the way to go? Just looking for some advice from anyone that has done it already

Have they already gone on sale for the first two games?

If you don't get them during the initial offering, my opinion is that you wait until a few hours before the game to buy them on stubhub or some other secondary market (but look around). Folks selling there want to make sure they get as much money as possible, but many overprice their tickets, but they want to be certain that they end up selling their tickets, so their price will decline as they get closer to game time.
Of course, if you wait too long, your out of luck, as well.

I would rather the teams just priced the tickets higher initially to discourage the ticket brokers from purchasing.

Just bought 4 for $65 a piece for the 1st home game. Bad seats but it will be fun just to be there