Easier to make the holes in the safe line up with the wall - otherwise you'll need some sort of structure in the wall to bolt too. Which is generally going to require the gib to hatched, the new structure installed and the gib refixed and patched. Path of least resistance here is put the holes in the safe in the right place!
Next point of call is what are you putting it on, carpet? It might pay to look into "carpet saver" feet, I have seen these that are solid plastic but designed to sit on the corners of square heavy furniture and all they do is give a small air gap under the safe to stop it crushing the carpet - this can end up with the carpet going rotten over years as any moisture can't escape.
Bookmarks