Used Tacoma SR5 And Upgrade on my own or TRD Off-Road?

Debating between a used 2013 SR5 or TRD Off-road. Save some cash on the SR5 and use it to upgrade on my own or just get the TRD Off-road and call it good? Are the locking rear diff, hill ascent/descent, A-Trac worth paying the extra on the TRD Off-road? Those I can't get aftermarket.

 

You can get aftermarket lockers. Question is would you need/use it. If so, go with the OR. There are other differences between those packages that might make the OR more appealing also.

 

I would also go with the Off Road as it will hold its value much better than a "Modified" SR5.

 

Off Road package has:
ATRAC (simulated front and rear lockers for off road traction control)
Hill decent control
Hill accent control
Rear locker
Rear bed inverter
Electrically boosted more powerful braking system
Light weight off road swaybar
Progressive rate suspension
Roll side curtain airbag disable
Upgraded interior trim
High bolstered TRD sport seats
'Waterproof' interior fabric
High output alternator
Improved capacity battery
Transmission cooler
Oil cooler

If you plan on using your truck off road these seem well worth the premium to me. When purchasing new the price difference was $2k at my local dealer. The question is are the features listed above worth the price difference to you?