1 Having trained, in the 1970's as an Avionics technician (aerospace systems) with multi core solder that contains flux you do NOT need separate flux.
2 Do NOT use desoldering braid. Use a suction system. The reason being you have to heat the braid for it to work. This adds more heat to the work. The vacuum sucker does not. It removes the molten solder with no additional heat.
3 Light, yes a daylight ballanced modelling/craft light is good. Also a magnifier. I have a magnifier/light all in one.
4 Fumes... don't worry about it. Unless you are using lead solder or working all day every day in a confined, poorly ventilated space it is not in reality going to be a problem. More people get hit by a bus.... (you try finding a bus these days let alone one that is moving fast enough to do damage.
5 Temperature controlled iron is a must. (personally I use a Weller but I was given my system)
6 THE MOST IMPORTANT THING IS A WET SPONGE. to keep the tip and thus the joints clean.