1) yeah, for the sake of tires and tubes, keeping lever use to a minimum is optimal
2) I really like the soma steel-core plastic levers for when I need them. Soft like plastic for less pinching, but steel core so they won't break like the cheapo plastic ones.
3) a buddy just showed me a trick for mounting super-tough tires. Put most of the tire on, then stand up next to the tire with the small part not mounted on the ground next to you. Step on that section with the side of your foot and pull the wheel down away from you. The tire should seat itself perfectly. Not sure exactly how to explain w/o pictures (or at least some sleep) but it's really neat.