Having spent 20 odd years working away from home in the past for 5-6 months at a time... battery conditioner / humidifer & vermin free garage should be fine, I never use to apply handbrake and rolled car into lay up position without using the brakes [so they did not stick]
Had the clutch stick a few times on Landrovers & TR6 ...I was always lucky and managed to free them up by driving them in first gear ...with foot hard on brake & clutch & accelerator all at the same time !
