Sorry for the resolution . But its a part of a revised version of an E load I've been working on.
My 5 cents about this circuit:
1) R8 rather interfere then help. I'd get rid of them. Added: R8 makes a voltage divider with R5.
2) value of C2, C5 is ok.
3) you need to lower R4 by order, to 1-10 k. The same about R5, R6, R7, R10, R11 (because of noise).
4) As R12 I use OAR3 or OAR5 type. 0,01 R value is ok for about 5-10 Amps current. If your max current is 5A then 0.02 R can be better.
5) If R6, R7, R10, R11 are close to each other so they have equal temperature then their TC doesn't influence much. That means your device TC is affected by shunt TC and opamp input voltage drift TC.
6) There is no need in U1 buffer.