Reply to 4 decks with 2 midifighter pros...

I was hoping someone could help me. I am interested in running a 4 channel mixer and 2 midifighter pros controlling 4decks or 2decks/2 sample decks in traktor pro 2. Is this possible with mappings from dj ranking s, and which midifighter pro models would suit my needs best if so?
Hopefully someone can help me. Thank you - Joshimoto