One last note, and again as it suggests in the book, RGB and CMYK will NOT yeild the same results. Your extreme colors will be the most problematic. Bright reds, deep blues, vivid greens will all dull in certain ranges when switching from RGB to CMYK, which is what happens when going from screen to a home printer.
SOLUTION: Outsource printing. There are CRT and LED printers that are LIGHT-BASED process and which will get you RGB results in a print (on photographic paper). You will never match this stuff with your home CMYK printer, even if you got a good one. Do a test at home (do not use cheap paper), and send the final to a service for output. Their 10-50K printer will make a print for you true to RGB using light process. BE SURE you ask for CRT or LED printing and not just a laser or inkjet output.