Nothing against the magnificent position on the first belay on the smith bolt.However I reckon to belay in the cave next to it is much safer. As there is a bomb proof Cam ( blackdiamond size 3 ) and a nut size 12 placement and a comfortable stand or even you can sit if you lazy as me.
I enjoyed climbing Dinosaur, as it is one of the better protected routes on Giberaltar rock, well considering Giberaltar rock standart.