Yeah, no need for oversized weapon, since it is effectively a natural attack.
I'm not sure "resistance to force" is a standard energy type. Find me an official precedent, and I'll go for it.
Ditto for the hardness and DR combo. While I can accept hardness as a SQ here (since animated objects have it), it might get wonky when combined with DR. Why not "DR 5/magic and bludgeoning or slashing" (or "DR 5/bludgeoning or slashing and magic" if you prefer)?
If you want to keep it simple I'd rather give them DR 5/magic and immunity to magic missile.
Still don't like blanket force immunity for them.
I can live with that, since, odd as it is, there are other creatures that single out magic missile for immunities or vulnerabilities.
Updated.
Organization: Solitary or x (2-12) ["press gang"?]
Challenge Rating: 2? (They have way too many hp for CR 1)
Advancement: 3-6 HD (Medium)?
A wooden press golem is 5 feet tall and weighs around x pounds.
The 3e calzone golem from the free adventure "Something's Cooking" required burning hands, grease, major creation, and stinking cloud. I'm not sure that any of those particularly makes sense except major creation.