One thing you'll definitely want add is an 8' ground rod outside in a moist area....(hehehehe like that would be hard!!) It will surely help with your powder sticking to the metals easier and save on alot of cuss words and re-sprays!! I bought mine at Lowes for around $10 but was a HUGE PITA for me and the son to hammer into the ground!
Ground rod in a moist area... (snicker) Gods, we can be an infantile bunch at times, can't we?