Particle board is heavier than solid wood.
Only thing I would worry about is your doors. With a miter you are gluing mostly edge grain. Not much strength there. You also glued your panel in from what I can tell. Down side to that is as the panel shrink and evpands it wants to rip apart the miter. Most doors are stub tenons on the stiles into the rails.
Oh never knew that. Always thought solid wood was.
Learn something new every day. Haha