Registering a Charity with the Charity Commission

Has anyone registered their charity with the Charity Commission recently?
If so, do you have any tips for someone just about to register theirs?
Am trying to help a charity that operates in Africa set up a "Friends of ......." organisation in the UK.
They have only 2 people who are willing to be Trustees at the moment.
2 is the minimum suggested on the Charity Commission website, but I've been told their chances are better with at least 3 Trustees.
Is this true?
Also, any other practical advice which would help them get registered?
TIA.