+1, between you and Jive Turkey you have it.
There's no reason to worry about the holding the wheel and fork while working on the floor since gravity will keep it all together. When tightening the topcap to adjust the headset, taker up all the slack then add pressure about 1/8th turn at a time until there's zero detectable play with your fingers at the bottom of the lower bearing, then add maybe 1/16th turn to ensure that the headset is tight.
Finish by aligning the stem and tighten the stem bolts and check that the steering is free through the range.
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