Just to make it clear, the T/O figures are FAR 25 figures, so its the longest of
ACC-GO, ACC-STOP or All Eng TOD by 1,15.
Landing figures (the figures on the right coloum) are without factor.
As for the landing, if the runway is grooved thaat would be a real good thing, ours (LDA 3323ft / C680) is grooved and that makes a biiiiig difference.
Has the airplane T/Rs? IIRC there are some CIISPs without them to save weight...