Changing the rear discs on my 08 C6 3.0

The pads have barely done a thousand smooth driving miles so am not bothering with changing them, a wee bit of sanding should do the trick so I've heard. Now I understand I should replace the caliper securing bolts but as these are nearly new again I'm not going to as new ones would come with pads so I believe. I've read either put new bolts that come already covered with threadlock or use bolts I already have with a bit of thread lock. I'm possibly overthinking this and trying to get hold of a threadlock (loctite 243) that has a brakeaway of 26Nm... but getting some asap nearby isnt possible...would some regular blue threadlock say loctite 248 or other blue threadlock be ok? They don't have a brakeaway force of 26Nm etc but perhaps it's not necessary...I hope.. I understand the bolts are tightened to 35Nm anyway... what do you guys reckon?.

also from caliper sliding pins....it doesn't say threadlock is needed...however I'm not certain of the torque amount to use, is it around 25Nm of something like that.... Thanks guys, I did btw check forum already for threadlock question but couldn't find an answer.

Pr code is 1ZL on front and 1KW on the back if I recall it correctly.