I have 12 ton bottle jack, not because I need 12 ton but jack is an item other people need to borrow sometimes.
I would also change out a tire at your leisure first before you need it on the road. Dry run so to speak, maybe in driveway.
I found out that my lug nut wrench didn't reach long enough into spare tire holder to get lug off. Sort of off set rim, which also means I couldn't check air pressure on spare. Because valve stem is now pointed the wrong way. Didn't want to undo spare every time to check air pressure so got one of these.(top item)
http://www.getagauge.com/accessories.cfm