I got this exact combo on my brand new tacoma, 3 months ago.
Gtechniq coatings is easy to apply, but u seriously have to check each section carefully and repeatedly with buffing removing residue.
Most coatings is just apply on and wipe off. Clean and effortless. However gtechniq is more like a oily residue, that just keeps smearing as you buff, but the oily residue can be buffed off, just takes ALOT of wiping lol.
And that applies to the c1 and exov2