According to Sandblast Training, there is possibility to upload custom image. Do you have any information about that?
Custom OS images are possible but not recommended as a malicious figure could reverse engineer detection rules by subsequent changes to a custom image. (ATRG: Threat Emulation )
However in order to achieve this you would need to go through TAC and QA. There used to be an actual part number for custom images and an associate price but i can see that now it is no longer in the product list. You would need more details on this from someone who works in Check Point or you Account Manager.
Retrieving data ...