Want to implement SSL - https

[ronnyship]

Anyone with good knowledge on the how to fix implementation of an SSL certificate in order to get https:// ? Am running version of 4.2.3, and approx 500.000 post sized board.

My webhotell offers various kinds of certificates and they do the implementation on the domain.

- Will speed be noticable affected?
- Will a 301 permanent redirect from http:// to https:// be sufficient, or do I need to update https:// elsewhere besides in the "Site name / URL / Contact details"?
- Will all posts containing images/videos etc from external sites make things bad with https:// (i.e. show as "this page is unsafe" for the user? If so, a SSL/https will become a negative aspect for our readers.

Assume Google would need to get to know me as we never were friends, but that is ok. Really appreciate some comments on this.

Edit: Have now converted from http to https:. Seems to be quite easy and now it will be interesting to see how Google views this over time. No hick-ups after changing protocol.