In my experience, church soundguys mix to very low levels compared to your typical concert. This is mostly due to having to please a wide range of age groups and typically quieter turns off fewer people than too loud. It is because of this that I would also recommend not getting a 410. Any time I've tried using a 410, it was always too loud out front and I kept having to turn down to the point where there wasn't a real point in hauling in the monster to begin with.
What has always treated me well in worship band settings, and most any setting where the house wants almost all of the control over volume, are 15s and 210s. In particular, sealed cabs are desirable. Back when I was using the Ampeg SVT210AV cab, all the sound guys raved over how much they loved it. Very mid present so they never have to struggle to find your mids to mix with, the were hornless so they never had to worry about my highs clashing with other people's and they don't pour loads of low end off the front of the stage, which interferes with their mix. As a matter of fact, if you know you're going to be playing in a room for the foreseeable future that has subs in it, I'd recommend the Ampeg SVT210AV cabs, maybe even with the micro SVT on top, but they sound good with anything.
The reason I switched from those sealed 210s is because I started playing in some church plants and different rooms where there were no subs, so my cabs have to push low end. For this reason, I really like the Avatar TB153 cabs. The sweet big sub speaker comined with a ported design can give low end for days. However, low end discipline is still key when playing for churches of course. Most days, when I play with them in the main sanctuary, my bass knob is at 11, sometimes lower,the stop low end billowing out of control.