You have to focus on your diet and training into PCT or you are going to lose a lot. Running a good PCT that includes HCGenerate will help you feel better as you are recovering.
If you only want it for joint relief, you don't need a high dose like that. 100mg works for most. Just remember that it is not healing anything, just making you feel better.
No man, you need to run a comprehensive PCT and take appropriate time off before running another cycle. You can't just go right into that SARMs cycle or you are just staying on.
You gotta stop overtraining man. It is not helping you. You grow when you are recovering and resting. Good sleep is key and obviously having a good clean diet.
Libido is a very complex thing so it is hard to pin it on one thing. You can run the exact same cycle twice and one time have a high libido and the next it goes down. As for the cycle, I wouldn't kick start anything. Just start and stay at a dose and let the esters work.