The clicking you refer to sounds like the fuel pump doing its job. It clicks until the system is up to pressure then stops until the engine is running so I wouldn’t worry there. I would guess you have flattened your new battery now so a good charge should see you back to when you started out with dash lights on.
Carbs off & thoroughly cleaned is a must if it’s been stood for any length of time over 6 months. I would suggest new plugs but see how you get on removing & cleaning out the carbs & jets first.