Well... I would start to move the cables inside the frame first.
As it can help to have the BB and headset holes open to help any difficulty.
And only then, press the BB and headset.
Any remaining operation can be done mostly in any order.
One trick if you go tubeless, as this can be a time sink.
It is to inflate a tube inside the tire( unmounted from the rim ) for a few hours, better a night before.
It takes its shape and pops very easily.
Mount the tire dry first without sealant, and inflate it until it pops.
Then remove the core of the valve and with a syringe fill the sealant.
Re-inflate and shake, or even better go and ride on some bumps.