Shimano Sora 3500 (3x9) and Alivio front derailleur
I'd say that based on the fact that you have a standard KMC-9 chain, and that you're keeping it 9-sp all round, you should be all-right.  

As noted in the comments, you'll need to change your bars too else you'll not be able to shift and brake correctly, but you said you are.  

Only thing I am not too sure of, is the FD. If I were you, I'd just try to use the Alivio you have, and if you have any issues, just replace it with a Sora FD-3503.  They are cheap enough.