The 2 showing no movement could merely be resting. No need worrying about something you can't do anything about, anyway.
I haven't hatched very many myself, but of the ones I have, I've never heard any prior to hatch.
I'll defer to someone else on the temp question. I thought 100 was optimal, but I'm not sure. Don't know that half a degree would make much difference.
I know I had read for a still air to keep temps for day 1-18 at 102, which my thermometers usually read 101.3-101.9. I keep telling myself they are resting, but I'm a worry wart! Lol
you should be fine, give them some time and see what happens, your time is over now its really up to them