Bob.....re the mirrors, convex round are better in my view but have you moved the arm into its closest position to the door? There are three spring detents and the further out the arms are, the less downward adjustment of the mirror.
As far as the other problems you have...a shame that it came out of the factory like that and equally a shame the dealer didn't pick them up at PDI. Still, all sortable by the dealer. The side screen just needs a slight bend in it to close the gap.
Handling as Graham said takes time to get use to and then gets a bit addictive as its so unlike a modern car! The chassis flex makes it feel quite different. Although bearing in mind the lack of PDI I'd check your tyre pressures!
