Chrome is really dangerous and hard to waste treat. That plus you have to be able to plate nickel well. Plating is a real science and takes alot of experience to be able to handle all the chemicals and troubleshoot the baths. Running a daily hull cell, pumping 66% HCL and 99% H2SO4. Keeping all the rinses clean, carbon treating.
Ask me, I make circuit boards and I've been involved with plating copper, nickel, gold and tin for 30 years. Our bigest tank's are only 400 gallons, but our investment in tanks, rectifers, wastetreatment, and lab equipment has got to be upwards of 250,000 dollars. That plus the county monitors our water and the EPA makes regular visits. Oh, did I mention that you can get a big fine or be put in jail for not being in compliance with your counties regulations.