I wouldn't recommend the slow release Tylenol for you right now as it does not seem to work as well after surgery. This is likely because the acetaminophen you're getting is released so slowly that it doesn't usually take care of the pain as well as the 500mg Extra Strength Tylenol. You could try it, though. You'd need to take two of the 650mg tablets every 8 hours on a set schedule to be sure the medication was available for you all through the day and night. That gives you a total of 3900mg for the 24 hours. That would mean you could not take any Hydrocodone for breakthrough pain as it also contains 325mg of acetaminophen. You could take the oxycodone.
What may work better though is the Extra Strength Tylenol, 500mg, in doses of 1000mg (2 tablets) every 6 hours. Again, you cannot also take the hydrocodone, but the oxycodone is okay since it does not contain any acetaminophen.
The night sweats you are experiencing can be a side effect from the pain medications you are taking. It should go away a few days after they are discontinued.