*Do you think to cash out early really helps mitigate the risk of losing much or chasing losses ?
I will always say that cashout is a neutral feature, that's why it helps some but disfavours others. You can use the feature today and be happy, and the same you may use the feature tomorrow and regret it. So we should continue to view it neutrally and admit that as we use it, we are even gambling on the end result.
*Is the cash out option availability a number one requirement for you when joining a new gambling site ?
It's certainly not my first criterion for choosing my bookie, but it adds a huge deal if my bookie has it, however, it only counts in sports betting.