Jpg vs TIFF

i'm editing an animation project comprised of still images that i'm creating in photoshop. my question is if there is a difference between using Jpg or Tiff files in the quality of the final HD movie, if all i plan to do in FCP is some light color correction?

is there a visible difference in quality if i export the files as 32 bit TIFF?

since the TIFF files are 3-4 times the size of the JPGs, will they slow down FC? (with large JPG files it often takes FCP a long time to prepare video for display)

much obliged,
dn