If the temps are all in the range u like them to be, leave it be.
Are u going to keep the PC after 5 years?
I am beginning to buy new parts for my computer, like the rosewill challenger case for better flow, because it is much much larger than my micro atx case, it supports 5 fans, and has a lot more holes for vent. Also a new HDD kuz mines running low on space, and eventually a new motherboard and cpu.
I'm not sure what temps I should have though. What are recommended?