I'm going to be controversial here and go
Laura
Johnson
Chloe
Sam
If Johnson went through uncontested, Sam could definitely lose out in a skate-off against Laura, and potentially against Chloe.
Johnson might then benefit from a hefty public vote to boost him into the final stages, where common sense (and all the voters who want to see skating) will finally prevail.
I'm going to go for Laura over Chloe to make the final two, despite her probably lower public support, as I reckon her scores will be higher and the judges more likely to save her in a skate-off.
EDIT: For the record, I'd actually like to see Sam and Laura fighting it out at the top, with Chloe a respectable 3rd and Johnson out next week.