In addition to the mentioned issue with JBA UCA's rubbing the tire depending on your wheel offset the JBA UCA can also hit some brands of coils at full droop if you are using an extended travel front shock.
See the discussion and photos here:
Most affordable UCA for 5th gen??
There are numerous other UCA's that don't have any contact issues. IMHO I think there are other better choices than the JBA due to these two scenarios. That same thread has a good discussion about some of those choices.
As far as Hi-Lift vs bottle jack I view them both as necessary.
Bottle or scissor jack with whatever type of extension and platform you need to make it work for your rig for changing tires and possibly recovery. Although sometimes you're in a situation where you can't use a bottle jack to change a tire due to the way the vehicle is positioned or instability of the ground underneath. Then the Hi-Lift (or similar) is a must have assuming you have a viable jack point for the hi lift (Sliders or bumper, rear receiver hitch maybe). Also Hi-Lift as a recovery tool.
I have used the Hi-Lift Lift-Mate numerous times to get un-stuck. great affordable recovery tool: (Make sure your rims will accept the hooks before purchasing)
Amazon.com: Hi-Lift Jack LM-100 Lift-Mate: Automotive