Happy to weigh in here. There's definitely a few elements to take into account prior to launching a campaign, as the first few days are really important in gaining traction. I often tell campaigners they should hope to seed at minimum 30% of their funding goal PRIOR to the campaign, as that represents market validation to other people on the platform (stranger dollars).
I'm not sure about KS, but I know promotion on Indiegogo is entirely merit based. This means campaigns that demonstrate initial traction and can bring some early backers are promoted through platform channels (home page, newsletter, trending page, social media, etc). Think of the platform as an amplifier; the more success you have, the more amplification the platform can provide.
We generally like working directly WITH campaigners, providing specific campaign strategy and support to help get them launched. This is the best way we can ensure campaigns are properly prepared for launch. Personally I've worked with many of our largest campaigners including Jolla, Bluesmart, Skully, Brewie and SmartMat to help get them set up.
We think this direct support puts you in the best position to be successful in your launch. If you're interested in connecting with our team, let me know.