What is a good decision hight in perfect visability?
My 'decision height' is 200ft - if I'm not happy it's time to go around. The only exception I can think of would be at an ATC field (FIS or A/G it is my call, and if I'm not happy at 200ft I'm not going to risk being unhappy at 100ft) and then only if I had been given an explicit reason to continue below 200ft (e.g. an "expect late clearance" call) by ATC.
Reading what you posted, I think you were fine.
