I personally think you'd be better off going for Goldsmiths, Royal Holloway, Brunel and Westminster and then either Kingston or London Met.
Kingston and London Met don't have a fantastic academic reputation, but you may find that the more practical courses there suit you better.
You'd probably be best off going to visit each of the Unis on a Open Day if you possibly can, as it will give you a much better idea of each department and course and it will lead to you making a decision you are more happy with.
Don't rush your application! Don't totally relax though, at this stage of the application process you should be visiting Unis, having a look at prospectuses and thinking about the possible courses (sounds like you've got a good start) and also writing your personal statement. Its important not to leave everything until the last minute, but there is no need to panic and have to make hasty choices as you have lots of time to make sure you are happy with your application.
Its best to send your application to UCAS a few weeks before the January deadline at least though, as it means there is less of a rush on and admissions tutors may have more time to look at and consider your application. Also, DON'T leave it until 1/2 days before the deadline as the UCAS website system often decides to crash with little or no warning.
Remember if you are applying through a school or college, you must submit your application to your school before they forward it to UCAS. Your personal tutor will add your reference, and they will need time to do this so again, its probably best pressing the send button with enough time for them to check over your application.