A planter box?! Some people have no clue!
Yup, I'd say the carb is off it. Certainly looks like it. Also the flywheel assembly looks like it would have come off it too.
The front tyres would have been solid rubber. Don't know how you would go trying to get solid rubber tyres for it now but you should be able to get pneumatics to replace the ones you have.
With a machine that straight I'd be going for a very sympathetic, minimalist restoration - but having said that this stuff is very much personal choice. Just thank the stars it's not going to have geraniums sprouting out of every orifice
Cheers,