Calves is a good idea. Unlikely to mess anything up.
Adding extra lower body volume to the bigger muscles is more of a ‘maybe’. If it impacts your ability to do other lifts then it might be an issue or it might just be further growth stimulus. I’d probably add some unilateral work in if it’s to support lower body growth (split squats are a favourite) and slowly increase the number of sets over time as you adapt rather than jumping in deep with it.
I am going to do the Stronglifts twice a week with a third session doing more single leg stuff and core...maybe I just deadlifts both SL sessions and rotate the rows and overheads.
Calves is a good idea. Unlikely to mess anything up.
Adding extra lower body volume to the bigger muscles is more of a ‘maybe’. If it impacts your ability to do other lifts then it might be an issue or it might just be further growth stimulus. I’d probably add some unilateral work in if it’s to support lower body growth (split squats are a favourite) and slowly increase the number of sets over time as you adapt rather than jumping in deep with it.