Reckon at a fair guess the original roof would have been in the region of a good 60 / 70 + kg, throw on that, the extra 100 for racks and aircon, Soo I'd be guessing you have a fair safety margin with the lift system at 94 kg..
Maybe take note as a precaution that they recommend with the extra weight on the roof and annex pegged out that you use the two eye bolts on the opposite roof corners and guy rope the roof to offset the weight of the pull to the awning side to save bending the roof lift tubes ..