If I were in good shape right now, I'd cosplay the following:
DMC1 Dante (he's my most favorite Dante incarnation of all time)
However, I will have to use the DMC3 weapons too. Instead of Force Edge, it will be Rebellion. So basically, it's DMC Anime Dante.
Advent Children/Complete Cloud Strife (most favorite Cloud incarnation; his Fusion Swords is awesome in its part of separating into smaller swords)
Ryu Hayabusa (modern Ninja Gaiden series)
Now I don't know which NG weapon should I use to cosplay as Hayabusa. So many awesome weapons one character can use.
These will be the ones I would cosplay for now. I may want to add more sometime later...