After you finish your cycle, you can just go straight back to your HRT and you don't need to do any PCT since you are not trying to recover your natural production. I would however get lab work done some time after your cycle to make sure that your health is going back to normal. Long term use of gear, even at HRT levels, can effect cholesterol, so be sure to make sure it's good. You can use fish oil and a diet rich in fiber to help with cholesterol