Can I try the Stripe few days? after make sure it can work on my magento store. I will pay for it.

Hi Dmitry, Can I try the stripe few days? after make sure it can work on my magento store. I will pay for it.

Yes, the testing policy is here.

Hi Dmitry,
Thanks for the fast reply.
Can I choose No.3?
And what do I need to do for the next?

I do not work for free. Test it yourself.