For the bumpstrip, make sure you get one with clips intact so it sits properly - I have one with a broken clip stuck on with sealant but as Joske says they never sit properly again.
Stark I know of a few people for whom that bit of trim is a problem (including myself), it never seems to sit straight and gets caught easily - not as bad as yours though! Again getting one from someone breaking their car might be the best bet but be patient to keep it in one piece.