Temp should be right around 99.5 to the best of my knowledge. Humidity? Well, asking what your humidity should be is like opening a can of worms. Personally, I like 70% and have had good hatches. But everyone will tell you something different. Make sure you have enough water to last the 2-3 days of lockdown so you don't have to open the 'bator. I say "2-3 days of lockdown" because there's even a difference of opinion on that.
If your 2 suspect eggs didn't smell bad, I'd just put them in with the others and wait.
Most importantly, LEAVE IT ALONE. SIT ON YOUR HANDS. DO NOT OPEN THE 'BATOR. I know it's hard, but it's important not to disturb the temp or humidity during those last 2-3 days.