OK welcome to fluffy's many rounds of hatching paranoia. Any and all hatching advice is hugely appreciated. Some questions to start it off. 1. When storing eggs, pointy side...? 2. When setting, pointy side down, but when putting them into lockdown, which way should I put the pointy side, down again? Last time I just set them on the hatching try, this time I'd like to try Pipd's way of putting them in a plastic egg carton, if I can find one. 3. Being that these guys are bantams, serama no less, do I need to candle on a different day? Actually, scratch that. Is candling them at all going to decrease the hatch rate by a 0.0000 something percent?
Pointy side down for storage, pointy side downward for incubation. My incubators' turners hold the eggs with the pointy end directed downward, but they're kind of on their sides and tilt back and forth. A lot of people incubate them on their sides without issue as well, though, so I wouldn't sweat it too much if you have an incubator where they lay on their sides.
For lock down in cartons, I put them pointy side downward, but sort of angle the eggs in the carton so that the dip that forms in the air cell during development is upward.
Here's a diagram to show what I mean by the dip that forms in the air cell:
So basically, they're sitting in the carton like this (complete with badly drawn carton

The reason I do this is because the external pip should occur in that dip in the air cell (often even just below the dip as seen at day 18 because the air cell draws down further as baby gets into position and pushes up into the air cell just before the internal pip occurs). By leaning them, I feel that gives them a lot of room to pip without being hindered, and if they happen to be malpositioned then there are very few surfaces against the carton that would block them from pipping elsewhere as well. And then, thanks to the carton, babies that hatch first aren't playing football with their unhatched siblings and giving me gray hairs

As far as candling goes...

I candle a lot, but mostly only by putting my candler against the egg and not actually picking them up or touching them at all with my hands. I have never noticed any kind of reduction in hatch rate as a result of peeking so much. I would doubt that candling them extra would harm your eggs, either, as long as you're careful about it and don't drop your candler or the incubator lid on them or something.
Days 7, 14, and 18, I take the eggs out of the incubator and to a dark room where I can candle and mark the air cells. In this case, I will wash my hands thoroughly, then pick them up one by one and carefully mark the edge of the air cell with pencil while candling them. Days 7 and 14, they go back in the turners to warm back up and get back to developing. Day 18, they go to my lock down incubator in the cartons instead. These are the only times I touch the eggs at all after they enter the incubator unless someone gets stuck during hatch and needs a little bit of help.
I would still candle on days 7 and 14 for serama eggs just to check up on them, but maybe day 16 or 17 for the third candling instead of 18 since they can hatch early. Turning eggs is only vital for the first 14 days or so, so locking them down a day or two early should not hurt them.