60V 200mA LED strip powered with step up converter
There are no gotchas. You have this figured out. All you need to do is step up the 5V supply to 60V at the required output current. If the led strip has a current regulator like a resistor, then you are done. If it requires a constant current regulator, then you also need to provide that. Or a resistor, while boosting the voltage up a bit to compensate.