1970 1.7 L, in nearly six years in restoration, I've got my engine ready to start on the test stand.
I have the fuel rails primed. Electrical has checked out OK.
Just wanted to get group thoughts on what they do ?
Turn engine over to prime oil pump or just start it.
How long to run it initially, and how or should I vary engine speed much , and to what extent ( rpms)?
Also do I change oil immediately after "break-in".
What do I need to be concerned about ?
Besides everything !!!
Engine is nearly stock (slightly higher compression pistons) with original FI.
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Prime first. Do not fill oil filter. I use a mechanical oil pressure gauge. If pump is new you should be able to get above 30psi. crank for a few seconds and let the starter cool. Once you have oil pressure fire it up and follow cam manufacturer suggested break in procedure.

Did you install a new cam?

Yup new cam and lifters.

"I use a mechanical oil pressure gauge."

Where do I get mechanical pressure gauge ?
Which one:

My flaps has many different brands. The exact one I used is for an accusump.

A gauge is an excellent suggestion.
But .......you can get by with just your oil pressure switch.
Attach a test light lead to power (+12V side of coil) and the other lead to the spade of the OP switch.
Remove spark plugs. Crank engine for 15 seconds at a time until the test light goes out.
Reinstall plugs.
Start it up ! ......listen !