Google 'EASA CS25' and then read paragraph CS 25.107 for their interpretation on VEF and V1.
If you google you might as well look up how the certification is being done on vmcg.
From a practical standpoint;
1) The weight might be more favourable in comparison to the Vmcg testing
2) Most probably not at extreme (unfavourable) c.g.
3) Nosewheel steering still operative (and effective?)
4) Do a risk assesment on crosswind (B.A. medium to poor
)
5) Take a moment in the simulator to asses how long the VVVVVVV oooonnnneeee call takes in relation to your acceleration and when you will decide to stop or go in this call
6) What is 30 feet from the centerline in the end
In my memory Boeing has an excellent article on t.o. margins (runway available) in relation to V speeds. Google helps here as well.
One of those magic traps introduced by a combination of certification criteria with performance optimising tools.
