I am using a Fuji Finepix S2 pro, which I am happy with. Right now, my arsenal of lenses consists of a Quantaray 28-200mmD F/3.5, Quantaray 100-300mmD F/4.5, Nikkor AF Micro 105mm F/2.8, and Nikkor AF-S VR 70-200mm f/2.8G. We are travelling to Italy next month, and I plan to be taking a lot of indoor, no flash pictures. I am wondering if the lenses I have are of adequate aperture or do I really need to spring for a big gun like the Nikkor 135mm F/2.0D AF DC? The first three lenses I purchased with the camera from a retiring wedding photographer, so I am still learning all their capabilities. Any help would be appreciated!! Thanks!