How do I gate a z0103ma triac using logic level output?
The MOC3041 is indeed a suitable optocoupler to use -- figure 15 in the datasheet (reproduced below) is your reference, by the way.  You don't need a DIAC with an optoTRIAC/TRIAC combo, and the MOC3041 is in a 6 pin DIP -- pins 1/2 are the LED and 4/6 are the optoTRIAC.