CPA offers that require CC submit

[OscarMike]

Hi all, I want to promote a free trial offer that requires a credit card submit. The credit card won't be charged during the free trial. Let's say I want to promote this on Facebook. Should I choose the conversion objective when setting up an ad? I want to target people who have credit cards (but they haven't necessarily bought anything via Facebook before). I want to send high quality leads to the merchant (aka people who keep the subscription going) to create a win-win scenario for the merchant and myself.

Can you please share your advice?

Thanks