You could build a similar setup for a good bit less money, but note what 924T says about rotting out metal.
I have my lab set up in the garden shed, complete with a fairly effective gable vent fan (effective in that it keeps the fumes away from my nose, but they still exist as I'll explain). Three weeks ago, I mounted a cheap plastic shower curtain as a "poor-man's splash guard" at the front of my work bench, hanging from a row of the small brass hooks you can buy in 100 packs for $5 at Home Depot.
They have already turned black and crusty - And so far, I've only run have two small-scale attempts at recovery.
I also noticed with amusement, though somewhat less dramatic, that I had a 5/8" steel ball-bearing in the shed for who knows how many years. It had a few small specks of rust on it when I started setting things up this spring, but basically still clean and smooth. Today, it shows more rust than steel, and feels like sandpaper rather than a smooth surface.
Oddly (but fortunately), all the crappy nails and screws actually holding the shed together seem unaffected by the acid fumes. But any "new" metal I put in there seems to rot away rapidly.
TLDR: You do not want to recover/refine inside any building you care about, unless you can afford to set up a real, externally vented laminar flow hood (and even then, I'd probably stick it in the garage, not in the house-proper).
