Product Hunters! Any advice and good suggestions for those who are preparing for the Launch?

Love this channel and community though I am relative new to here. Was wondering as we intend to launch our product here. Would love to hear any tips or feedbacks from who have been through this already! Top of my mind, few inquiries such as: What preparation you have been done on Product Hunt specifically before officially launched here? Any solid metrics that you will use to identify that, ok ,we are good to go, ready to launch here. Any lesson learned? or what would you do differently if you got a another chance? Thank you so much!