All of these are good: "Things will be better if we pick a time to talk things over" "Things will be better if we set a time to talk things over" "Things will be better if we find a time to talk things over" "Things will be better if we arrange a time to talk things over" Or, you can use a modal (any modal will do): "Things would be better if we picked a time to talk things over" "Things would be better if we set a time to talk things over" "Things would be better if we found a time to talk things over" "Things would be better if we arranged a time to talk things over" It is better NOT to use "will" twice, such as: "Things will be better if we will pick a time to talk things over" "Take" is not a good choice.

I don't understand either one. Explain the context.

What is the difference between this two expressions? 1) ...if we'll take our time. 2) ...if we'd took our time.