Digital BW, The Print

Today I received my very first UT7 inks from MIS. Before I install 
them in my 2200, I'm a little confused about some aspects and sure 
could use Paul's help or anyone else who can answer a few questions. 

1) Can I just install this inkset in my printer or must I purge the 
printer to get rid of the residual Ultrachrome ink or just run a 
head/nozzle cleaning cycle.

2) And what about drivers? Is it advisable to print using PS (Epson 
drivers) or QTR? Which is preferable? And Why? I Obviously want to 
avoid metamerism and bronzing as much as possible. 

I hope I get some answers soon cause I'm eager to start printing.

Thanks!
SteveZ