Pre sale question.

First, i only need to import around 40 customers and 35 orders from shopify. I want to confirm that there is no additional cost above the quoted $59 to do so. Secondly, do i need to apply the code i’ve seen mentioned in support for correct order numbers BEFORE importing orders or can i add the code after the fact to get them to display? And lastly, i am not changing my domain name so i will need to complete my wordpress site before i can remove the domain name from shopify and apply it to wordpress. Will i still be able to use this tool prior to doing that?
Thanks so much, Rachit30