I shouldn't worry so much about bread. There is a bread for every Canton and day of the year.
I buy wholemeal, multigrain, rye, pumpernickel, half brown/half white etc regularly. Germany and Switzerland have the best bread, I think.
Flour is fine, the only difference is that there is more choice by grade - so each flour packet has a milled grade on it depending on how fine it needs to be. The flour in bulk display tends to be the common usage flour. You buy backpulver (baking power) and add directly to the flour before weighing (I teaspoon with every 75g iirc). I've always done this, as self raising flour tends to lose the raising properties if kept too long.
I think if I remember you will be quite close to some of the border towns so it will be worth you shopping in Germany say once a month, as there is far more choice - our local supermarket sells Heinz beans, corned beef, Heinz tomato soup for example. And the cereals are about half the price of CH.
When I go back to the UK next month I'll be stocking up on Salad Cream, Branston pickle, HP sauce, crumpets, Ribena, Barley water, Yorkshire and Glengettie tea bags, suet, cornflour (they have saucenbinder but i prefer UK), good vanilla extract, treacle, various brown sugars for baking, syrup.