A very happy new year to you
Are you going to connect PCs direcly to L3 switch modules. In this scenario, say if one L3 fails (power supply failure) then, even if HSRP keeps running betn two L3 switches, your PCs will not have any redundant path to the other core. So anyway the PCs will loose network connectivity.
You can use an access switch to connect PCs and then youcan provide uplinks to each core from this access switch
Hope this helps