[KevinW]

Id fully recommend a Grandstand ticket - you will get a better view, and if it rains its a blessing to be out of it.

Your chosen B&B looks ideally located, as there will (I beleive) be a little less traffic comng up from the South of Chichester. However, expects delays in the approach road to the town unless you set off early - Id suggest setting off at least an hour before the gates open to avoid the rush.