I don't think the coriander and peels will hurt anything. They will eventually settle to the bottom of your fermentor and you can rack from above and leave them behind -or if they don't settle, just rack from underneath.
This kit is a wit, right? If so, no need for a secondary, since in this case you are not really "looking for clarification" pardon my pun! . Just leave it in primary for a good 3 weeks and you should be good to bottle as long as your gravity is stable. If you don't yet own a hydrometer you should get one. The one thing that doesn't usually come with a starter kit but should.