Not saying that this is not doable, but in the sum total of my experience with cabinets and doors (particularly if a consistent finished edge on both components, with a consistent inset gap is desirable) it is a helluva lot more efficient, in materials and time, to build face frames and fit the doors, than it is to do cutout doors in a front panel with a jig saw in an attempt to save time and effort applying hinges. :)