Did not say what your sickness was...virus, infection, injury, etc. Can make quite a difference. Might consider taking another week away from training to insure complete recovery and than begin more renewed than ever.
But that's your choice, feeling better does not always mean your body is ready for training. If deciding to return in just a week, than start with 2 sets of a higher rep range, like 10 to 12 reps. Keeping it more strict and with lighter weights. And do not even think of going any where near failure. That first week back should tell you quite a bit about how your body is responding. After that, begin training with serious intent again. Your program looks excellent.The 5X5's whole body thing have put on a lot of muscle, for a lot of men, over the years. Good Luck.