I would go with 100-400mm(or400mm5.6 prime)+7d(or xxD) instead of 100-400mm+24-105mm+350D


for wildlife and bird, better AF and burst rate mean photos probably missed with slower body.


400mm 5.6 prime with 350D doesn't make a lot of sense since this lens is good for BIF IMO, however, I found out that at 1 hour before sunset(of cause in sunny day) you can easily get speed of 1/1250-1/2500 with ISO 200-400 on my 7D(at f5.6) , in this situation, IS is not a big deal when handholding you camera.


400mm 5.6 prime is also cheaper,lighter,smaller and better IQ than 100-400mm.


just my 2 cents