Ended up getting 2nd hand pair of Shimano PD-A530s from richard_s. He showed me how to change pedals. 1st time I've done it...woo hoo!
And for some reason I had a pair of brand new SPD cleats in my bike bits box so just put those on my MTB shoes.
For testing I leaned against the wall and clipped in with some diffiulty (after being used to much softer/smoother Crank Brothers pedals).
Had a brain freeze and stood up where upon I started to fall over...couldn't unclip in my panic.
Would have done a full horizontal trackstand if not for the couch cushioning the fall
Might make adjustment to the pedal now