It will have a French Bottom Bracket so getting a replacement will require ordering it and waiting for it to arrive. This could ruin a tour if your BB craps out on you. This does not happen very often but if it does a typical bike shop will not have a replacement in stock. Your tour will be done.
70's era Peugeot bikes used straight gage steel tubing making them heavier than modern butted tubing. These bikes are called gas pipe bikes because the tubing used was the same tubing used for gas pipes. Dropout spacing will be 120mm so you would need to spread them so a modern rear wheel can be used. You must be very careful you do not break the brake bridge when you do this. Also remember that in the 70's the Touring bike label applied to all road bikes. Vintage touring bike geometry is completely different than the geometry used on modern touring bikes.
Personally; I would not use this bike for touring.