Redirect http to https so you can prevent issues with members being logged out and to maintain your search engine traffic.
Sorry - i didn't understand your question - can you please be more specific what exactly do you need?
your site is automatically redirecting to https:// this will not affect your SEO, this actually will increase your SEO.
using https will make you get more trusted by google, but my suggestion rather using .ml domain, why dont buy .com using ssl that much more better.. you can just redirect using httaccess so you will not losing ur visitor
in google webmaster there is a option where you SET site is moved from http to https. hope that doesnt affects your traffic. btw, set parameter permanently moved.