Just a bit of an update…it started trying to print in mid air so I added “G28” to the “printer start” dialog under “Tools>ManagePrinter>G-Code”
I had problem number 1 that you mentioned - doesn’t wait for nozzle temp (or locate at starting position)
I found I had 2 printers in my list in Creality Print even though I’d only selected one when setting it up.
I had the Ender-3 V3 which had almost no Machine start G-code specified
…And the printer I wanted to use Ender-3 V3 SE had all the necessary Machine start G-code specified.
After removing the Ender-3 V3 (and therefore selecting the remaining correct printer) it seems to generate G-code with the correct starting parameters