Probably 0603.
Probably 1206. The sense resistors operate at higher current than general purpose resistors, so use larger package for better heat dissipation.
Probably also 1206 or similar.
The "bulk" caps can be combined, but 0.1uF should be per IC. Note that these modules leave off a larger bulk cap which may be recommended.
It is always a good idea to check the datasheet to see what components are recommended.
If I were you, I would consider putting modules on your board for now to keep it simple. However, you will probably need to know the general principles for the rest of the design anyway.