What is the pre-mine? i can't find any information about pre-mine.
and btw, about exchange that showed on your website.
Are you sure that you will use CryptoBridge (CB) services as one of your exchange?
Have you seen my previous post? The first block has 90M Foin coins, and as he stated on his OP, the total supply is 100M, so just calculate the percentage of premine that he has - it will be a total of 90%.