wizard doing it all DM help

[Kelb_Panthera]

Would the monk need to stop monk progression if they took sacred fist PrC?

Both Sacred and Enlightened Fists advance some of the monk's primary features along side advancing the spellcasting ability from their divie or arcane casting class, respectively. Enlightened fist is stronger for a front-liner gish and enlightened fist is better for a more utility focused character, IMO.