I am going to guess that it will be slower than either of the two estimates above.

First off the Versacam operated most efficiently at the upper setting of its draw length range so you are probably going to loose a few fps for having it set in the middle.

Second, your draw length is 3 inches shorter than IBO specs so there is a 30 fps speed reduction there.

Since the IBO for the havoctec Versa was 300 fps that currently leaves you at 267 fps with the 350 grain arrow and 257 fps with the 400 grain arrow..approximately ofcourse.

Now, since you have all those items on the string you are probably looking at an additional speed reduction of at least another 10 fps from what I listed above if not more which would leave you with something around 245 fps for the 400 grain arrow and 255 fps for the 350 grain arrow.

Your KE numbers should be higher for the 400 grain arrow but it is normally within 1-2 ft. lbs of the lighter arrow' s number.