We're using a confirmed opt-in email for our customers in the UK/Germany - but we're evaluating if this is the best option for 2018 with GDPR on the horizon.
It seems that including both of those could be tricky, especially if a user is just skimming over the text. Do you ever see submissions where the users have selected both options?
To avoid confusion, I'd go with the explicit opt-in and only include the first option "please send me relevant..." and collect the contact information you need. I do know that in many countries, like France, you are not allowed to have a pre-checked box, so make sure it's unchecked. If you decide to remove the second option, make sure your email footer clearly displays a link to unsubscribe, preferably a one-click unsubscribe, that doesn't make users jump through hoops or login to remove themselves from the mailing list.
As you scale, you can definitely build out a preference center, but that's not something you have to implement right away.