In reply to dm3lions:
Inverted Staircase might be a good shout. Right Route (note: NOT Right Hand Route) might also be worth looking at. If you find those easy, Maud's Garden is a brilliant route, but the start is poorly protected so it'd be worth seeing how confident you are on rock first.
Re top roping, I think the best way to not annoy anyone is just to avoid setting up camp on a route for the whole morning and to be aware of whether people are trying to get on your route and if so make reassuring noises that you'll be off it in a minute. The right hand end of the lower tier - Chalkstorm area (but probably not Chalkstorm!) is traditionally full of top-ropers, but there'll probably already be two in-situ outdoor centres by the time you get there. The right hand end of the upper tear - Blushing Buttress and Calcutta Buttress might also give you some good stuff to go at.
Have fun!