Keep in mind though, that if you enter an order, it is no guarantee that you will be ordained a priest. Many orders have brothers and priests, and the discernment to become the latter comes after the discernment to become the former. The community and superior will decide how many priests it needs, and ultimately the superior will decide who receives priestly formation. There is also no guarantee that you’d be assigned a parish even if you do become ordained.
The second point is that you need to identify with the charism of the order. That charism can usually be best understood by studying the life and works of the founder (St. Benedict for Benedictines and Cistercians, St. Francis for Franciscans, St. Dominic for Dominicans, etc.). You must want to become a Benedictine (or Franciscan or Dominican etc.) first, above all else.
The main point of, say, wanting to become a Benedictine is not because a specific monastery is very traditional, or uses the vetus ordo Mass, or even makes great beer. It is because you want to first and foremost follow in the founder’s footsteps and seek communion with God according to his particular charism.
Many Benedictine congregations have their monks staff parishes, as would priests from several other religious communities. The charism of a Benedictine-staffed parish may differ from that of a Franciscan-staffed parish and that’s the way it should be; the religious priest will try to live according to his charism as best he can even outside the cloister or community and that will be reflected in the parish. Sometimes that does cause friction in parishes that are used to diocesan priests in the past and where parishioners may thus not be aware of the theological foundations for a religious priest’s approach to parish management and liturgical choices.
So the first place to start would be learning what each order is all about and whether that particular lifestyle and manner of seeking God suits you.