Providing +/-10V Power
It is often simpler and easier to use a DC-DC converter for these situations.  You would power the converter with your 5 V and it outputs dual rails for your opamp.
Dual 10 V outputs may be hard to find.  If you can use 12 V rails, there are hundreds of choices.
You don't specify your current specs, but something like this might start you in the right direction: Digi-Key Link