Live drawing #5

If you're worried about ink bleeding you could try using an alternative ink or method. Some china inks are more waterproof than others - some aren't waterproof at all. They also need time to cure as they are carbon based, which isn't ideal for quick timed watercolour pieces. Permanent fine liners such as Derwent "Line maker"s dry within 10-20 seconds with little bleed from water which could combat this issue, however they are also a different drawing medium to china inks. 

You could also take a break after drawing for a few minutes to allow the ink to dry - pausing your time - and then come back to apply the watercolour after. Though if you want to do the whole thing in one sitting, you could start by painting over the parts inked first as those will be the parts least likely to bleed.

lovely colours. You could maybe use the ink bleeding to your advantage - avoid touching the outline in areas of highlight so it has a nice strong highlight of white, then in shade let the watercolour touch the ink lines and bleed a little for some nice organic shadows.