Hi Scorpian, yes there is no problem in curing your own live rock in buckets, with powerheads and heaters. Like Dale mentioned, keep the salinity and temp. the same and "off you go" and yes smell is the best indication of cured rock. Curing is a simple but sometimes timely and stinky process. All your doing is killing off anything that has partially died from shipping or that will die in a reef setup. This can take weeks and even up to a few months, but with a small amount of rock it shouldn't take too long. As for water changes, I find that one or two doesn't hurt, and might even help speed up the curing alittle. Multiple changes however are just a waist of time and salt if you want my opinion.
As for using ornamental or bleached rock, I would use dead rock if it was to be place partially in or on the sandbed(base or foundation rock) and then some nice pieces of live rock ontop.
cheers, Rich