Something to consider is the use of 5/8 inch melamine-faced
particleboard. You would use a 3mm skin on any exposed ends to match
your wood type. You'd use solid hardwood for your drawer fronts.
You'd also use solid wood for either edging your sides or you'd go with
solid face frames. This would probably be the least expensive
material, and it looks great/ easy to clean. If you go this route,
make sure you invest in a dedicated laminate/melamine blade for your
saw.

The problems with using solid wood for everything are 1) much higher
cost, and 2) lots of edge-jointing to be done.

Steve