Image Making Trial: Comedians Into Birds

For one of my projects based on funny tweets I've decided to try to make some famous comedians into the style of the twitter bird. My first attempt is at Roy Chubby Brown and just using simple line work and block colours I've coloured it in fine. All I'm wondering is how long colouring the rest of the birds is going to take... (Probably too long)... with how much time I have left and if it's really going to be worth it.... Hmm...

Another option I could pursue is perhaps just using tones as opposed to block colours. This way, shadow and highlight can be created easily and might look better overall....

I'm not sure... I hate choices.