Active Directoy is not mandatory and for DNS, this is a requirement but using IP instead of FQDN should work, this link should be already accurate :
Is a DNS server still required when using a Static IP for VCSA? (williamlam.com)
Used IP for the FQDN, you can replace it when you will set a DNS server using the VAMI console later.
The only issue is that when you will renew your certificate, you can have some issue.