Bouncing in my seat

Anything I should be aware of with the starting/stopping aspect?

I have already (a few years ago) done the failed to unclip, oh bollocks I'm lying in the road thing. I'm a bit concerned that not being able to freewheel will result in pedal mashing shins issues.

Start with loose cleats going slowly in a Tesco car park on or grass.

If you've got used to unclipping over the years you really should be fine.