You're liable to get all kinds of suggestions and recommendations. When I got my 1588 I read the instructions and did what it said. The instructions were pretty clear. Put water in the middle reservoir. When it goes dry, put more water in. When you get to lockdown, put water in the additional reservoirs it shows. I don't mean to sound harsh. You've probably already read the instructions and all that. But you might be surprised how many people load the incubator without reading the instructions.
We all have different conditions and different things work for each of us. I was pretty consistent the first time I hatched, looked at what the results were, and tweaked it a bit. But I was consistent so I had a better idea of what to tweak. If you are all over the place, you don't really know what might or might not have influenced the hatch.
Do you NEED to candle? No, you do not NEED to. It's fun and educational to do it. You can learn more about the incubation process if you candle, but the eggs will hatch the same whether you candle or not. Some people may tell you that you need to candle eggs to tell if one is going to explode. I disagree. Candling won't really tell you, though it might give an indication. You need to sniff the eggs occasionally. The egg shell is porous. If the egg is going bad, you can tell. Very few eggs ever explode. When they do, it is a real mess. On the really rare occasion on does go bad, you can find them by the sniff test more than any other way.
I think it is a great idea to have a good thermometer and hygrometer to tell you temperature and humidity. Do not depend on either one unless you have calibrated it. Your thermometer needs to be one accurate to within 0.1 degree. Those thermometers meant for outside are only good to within 1.0 degree. I don't know where you can find one that accurate on the shelf. I ordered mine from Cutler Supply. I don't worry too much about the actual humidity in the incubator. I use my hygrometer to tell me when the reservoir is out of water and I need to add more. Some people really obsess about getting the humidity exactly spot on, but I don't. Here is how to calibrate your instruments.
Rebels Thermometer Calibration
http://cmfarm.us/ThermometerCalibration.html
Rebels Hygrometer Calibration
http://cmfarm.us/HygrometerCalibration.html
Don't worry a lot about the temperature and humidity dropping when you open it. The center of the egg is pretty dense. Even if the air cools off a lot, the egg itself takes a long time to actually cool off. With both temperature and humidity, it is the average over the incubation period that counts, not one particular moment in time. Obviously you don't want to take the top off and leave it off for long periods of time, but the time to add water, turn them, or candle them will not cause any problems. Just use common sense.
I hope you got the turner. That makes it so much easier. If you did not get an automatic turner, you need to turn them several times a day. If you are unclear on that, get back to us.
A word of warning or advice. Don't overstress about it. Enjoy the experience. You will possibly get some suggestions or recommendations about what to do, sometimes with the admonition that the world as we know it will end if you don't do exactly as people say. It's not really that desperate. Consider the recommendations, mine as well as others, as guidelines, not absolute laws of nature. The guidelines are there to improve your odds of success. They don't guarantee either success or failure. I don't follow all the guidelines I know. I'm sure I don't even know a lot of the guidelines so I don't know if I am following them or not. Some of us have failures although we do everything right as far as we know. Some of us do real well even if we do some things wrong. It's sort of like driving to the grocery store. If you follow the guidelines for safe driving, you improve your odds of not having an accident. But that does not mean that something won't happen, whether from mechanical or what someone else does. And just because you run a red light or don't come to a full stop at a stop sign does not mean you will definitely have an accident, but your odds of an accident increase. So just do the best you can and don't obsess about it. You will probably be OK.
Dont forget to post pictures when they hatch.