One approach might be to take inspiration on the action I posted yesterday for previewing multiple drafts.
It creates HTML from a set of Drafts, store the result with added style info in a variable, then generates a preview from that variable.
If you keep editing and generating new drafts you will potentially be creating a lot of redundant drafts you will need to remove later, so I think a preview of temporary content it better.
Do you have a final converted version you want to keep? If so you could ti’s the cancel/continue result that a scripted preview generates to then optionally go on and create a draft with the full content, sav it to file, etc.