Dude whatever you do, do not use the soundeffects that are used in kill bill especially the ones on the soundtrack. They are the most unoriginal, boring effects I have heard. I can't believe RZA actually produced them but it just explains why he has lost the reputation of "Hiphop Genius Producer". Back in '93 that dude was worshipped for his work on all the WTC's projects. Now...well let's not even bother.
Anyway back on topic...all you have to do is to go and do a little crate digging. Go into an independent record store e.g. Amoeba Records (S.F./L.A.) and head straight to the "Breaks" section. Then just dig through all the crates of crap until you find the vinyls you desire.
Basically you are looking for something on the Q-Bert's "DirtyStyle" label. If you don't really know your "breaks" from your "bollocks" then forget the diggin and just pick up an early 90's release of any Wu-Tang LP.
"Enter the Wu-tang"
"Liquid Swords" (Gza)
"Ironman" (Ghostface Killah)
These albums have excellent fighting/sword sound-effects where you can sample.
Probably easier to just download them, .wav format. There must be millions of audio soundbites out there you just gotta use your googles to find them.
But if I were you, doing a film like this, no matter how hard you try (assuming you are an student/amateur), it is likely to be viewed as corny. So instead of using all these 'standard' effects, twist it on its head and use different sounds like ones from old video games (Street Fighter/Kesiden/Mortal Kombat) that would come off pretty damn cool if you edit it correctly and use the correct samples.