Its already started to warm up here in northern California and i have acquired a full size side by side, been testing it out trying not to use my temp controller on the main unit power as i would like to keep using the extra freezer space

Im managing to keep the temp at 50-53F by setting the ref to its highest setting (45F) and using a heat lamp with the temp controller set at 53F. The ref is cycling quite often obviously trying to get back down to 45.
Humidity here right now is pretty low 51% and in the ref its 63% so i know ill need a Humidifier
My question, will the ref burn itself out cycling so often? will get worse i guess as the weather gets hotter (ref is in garage) or would i be ok leaving it on its highest setting of 45F and not using the heat lamp?