Get the best you can afford, as someone has already said. I have an Ideal, made in USA. It's fine for the amount I do. Oddly enough, I just put back-to-back 12-plexes in between my office in the house and the closet in the bonus room. They are adjacent. I have a lab rack in there and I moved the office networking equipment onto the rack. The Mrs. is happier with fewer wires in view.
Don't bother with CAT3; use CAT5e, 110 blocks and RJ45 jacks for everything, that way you can cross-connect a LAN or a phone at will anywhere. Don't bother with the added expense of CAT6, you (and the church) will never know it's there and even if you can connect to CAT6 specs, the first cheap jumper will make it all CAT5. Get a tester, even an inexpensive one will tell you if all the pairs are connected. Make sure you point the cutter side of the punch the right way around.
Make a plan first. Put more jacks in that you would expect, four-plexes at least. Do "home-runs" to a panel in a central location. LABEL EVERYTHING. Did I mention to LABEL EVERYTHING! The blocks and the wall plate kits all come with LABELS. Use them. Make a drawing of what you have installed and the cross-connects you have made. Put them in a page protector on the wall of your cross-connect field. Make a copy for yourself and for some responsible person at the church. Have a good time pulling cable and make sure the ladies society at the church make plenty of food for you and your crew. You are going to get some volunteers, aren't you? Oh yeah, make sure you use plenum rated cable for up in the drop ceilings. Contact your local Cisco (r) reseller to see if they can get you some LAN equipment (switches) for free from the scrap pile. Use the best, even if it it slightly obsolescent. Contact me if you need further advice, planning assistance or the like. My e-mail is in my profile.
Russ, CCIE candidate and multiple other industry certifications