delhidi, I've been meaning to respond to you--sorry to keep you waiting. You are in great company with considering a move to Boise!
Symbasmommy is right--there is a wealth of information in the forums already. Reading through posts will definitely help get you up to speed.
School-wise, all of the Boise schools are GREAT. Yes, Boise High has the top reputation academically but the other high schools all land on the US News & World Reports list of top 500 American High Schools. Meridian schools are good, too, though they have larger class sizes and not as many programs (fewer AP classes, fewer programs overall).
I'm not Catholic but have been to services for various reasons at both St. John's downtown and St. Mark's up on the west Bench on Northview. The communities in these churches are active and vibrant.
How tall are the radio towers? Do you need a rural setting? This is a new one to me--not sure how to advise on that one.