0.7-0.9 seems to work based on what you're trying to do.
"chibi" is what the original style is tied to, but it doesn't do a big difference on all characters. Sometimes it'll cause little chibi versions to show up in the background, so you might have to fight with the lora using something like "solo" to remove them. Other than that, I think it works pretty well.
Yes I know it says "Sara" as her Japanese name. I'm not making a mistake.