Does your lack of quantum effects include chemistry?
While Newtons Laws of motion are a low-energy approximation that's in fact the limit as energy approaches zero, that makes it a very good approximation. Chemistry as a set of rules of thumb is a very rough and crude guide that doesn't give exact results and falls down for lots of organic chemistry.
So, if made a simple set of rules, it would not have the richness and subtlety needed to support life as we know it. If you tried to codify the real results of chemistry to better approximate what really happens, you need a special rule for every distinct interaction. It doesn't reduce to an underlying simpler model.
What about the very existence of stuff in general? Electrons don't fall in to the nucleus because of quantum effects. Would atoms have a substructure? Is every atom a distinct kind of thing, rather than reducing to simpler basics? How complex do you want to make the underlying rules, and would having deeper rules violate your premise?
Matter has essential matter-like qualities (hard and solid) because of spin. Spin just shows up because of quantization and Minkowski spacetime. So instead you need rules to make atoms hard and solid as a direct fiat. Will that cover all the subtleties or will your rules be simple? I guess you'll need special rules to make metal behave the way it does such as conducting electricity, on top of all the other special rules already discussed.
Ok you programmed in metal wires and classical electrodynamics, but what about semiconductors? Can you come up with rules for that which are not in your forbidden territory?
In short, it will be as much as you invent using explicit rules for all the effects you want to support. Because all that just pops out for free thanks to the more fundamental rules of QM.
Actually, the basic ideas of QM exist because the universe has a smallest scale. If you don't have QM does that mean your universe is continuous and infinitely detailed? Or does it mean that you have a system that's so utterly different and alien that the question is meaningless?