You can go a couple different routes. If you simply want it to be nice I’m sure you can purchase new hardwood furniture & stock. If you wish to keep the original wood, there is a technique in using epoxy mixed with sawdust. Sand down & clean the wood then fill the voids & cracks with the sawdust/epoxy mix. Let it cure & sand flat. Then refinish to your liking. The metal has normal age rust & pitting. 0000 steel wool & oil will take care of the rust, while preserving the little bluing still there & the natural patina that has formed over the years. But personally, I would strip it down to parts to a complete strip of rust/tarnish/old bluing (what little is left). Then I would re-blue it myself.