valve cover gasket question -

so in about two weeks i’m doing a massive amount of maintenance items and have finally acquired the approx. $3k in parts! (actually, waiting to get the jhm phenolic spacers, missed out on getting them on sale for 250 a while ago, hoping they will be again soon, and did anyone notice their exhaust sale price jumped up $350 to 2250?)…anyway, i’m doing a carbon clean, replacing coils, plugs, air filters, adding phenolic spacers, replacing water pump and related parts - tensioner, idler, etc. and adding jhm crank pulley, changing transmission fluid/filter, new adams rotors/pads/lines…so question is - valve cover gaskets, if they’re not leaking, should i replace them now? is there labor savings of doing them while doing the carbon cleaning? i wasn’t planning on replacing the fuel injectors unless mechanic finds it necessary, not sure if their shop is capable of cleaning/flowing/resealing them or not (or if their cost to do so is more than jhm’s set minus core charge, or a new set from rockauto for $900)…so if you’ve done the VCG’s, let me know when you’ve done them…thanks!