I think you just have to go for it and put them in pants!
You say he's ready, is he telling you he needs the toilet? You've nothing to lose by trying! Decide whether you are going to get a potty or use the toilet. I personally think its good to get them used to both as I took a potty out with me at all times so I wasn't caught short!
I don't think pull ups work as they are like a nappy.
You are bound to have accidents but try a sticker chart as a reward and give plenty of praise for a result.
If its a total disaster after a week then I would stop, without fuss, and just try again in a month or so until you succeed. Only time will tell, good luck!
Oh and for getting wee or worse out of the carpet baby wipes are good or just stain remover spray then febreze to stop the smell!