For Jorgie & Matt I would say fallin.

Chico & Jodeyne is a difficult one as last night's was easily his best but they never repeat the semi final routines.

Last night's routine from Matt & Nina was also arguably their best bar the headbanger which could be removed but as with Chico they can't do it so for them it will probably be Without You or Dance With Me Tonight.

I agree with you for Jorgie and Matt, Fallin would be a good routine, and for Matt and Nina, I'd go with Dance with Me Tonight.
To be honest I can't clearly remember anything that Chico has skated so I don't know what he should repeat (but definitely not the shirt off routine. I hated the music and didn't need the close up of his backside wiggling).

Matt and Nina - Without you
Jorgie and Matt - Fallin
Chico and Jodeyne - Sexy and I know it/ The Flood

Problem is that Fallin is a 26 scoring routine
Without You is a 28.
And Chico's best non props, non SF routine is Sexy and I know it which is a 25.

If they do those, the judges will just keep on marking Mathew higher for his basic skating, he will top the leaderboard automatically, and Chico may or may not do better depending on how shirtless plays with the final voters and Louie.

Jorgie and Chico may both need the routine thats most voter friendly and has most scope to add something with wow factor to it - which may be something else. .

What was the one Chico did in Valentine's week with the ballet lift? They could juj that up a bit for the final surely, it was great

I would've thought Jorgie could add a bit more to Fallin' as well if there was time to do it!