Reply to Planning Ableton Setup - Saffire Pro 14 or 24 to go with a VCM 600?

So I am now sorting out the things that I need to buy for my set. Got a sweet $400 deal for a 2nd hand VCM 600 and now onto the audio interface. Which one is preferably more suitable for a VCM 600? the Saffire Pro 14 OR 24?

I am using the first 2 channel for songs, the 3,4 and 5 for audio fx (noise, samples, loops) and the 6th for a Drum Sequencer either from an iPad Lemur running Ambivalent Beats OR Maschine Mikro.