I am about 6ft tall, and a bit chubby ? I am currently going to a gym and I am doing 10 minutes on the bike, then 2,000 meters on rowing manchine, then 10 minutes on crosstrainer. Then I do biceps curls at 20kg 15 for 3 sets then after I do annother arm weight which is 15kg 15 for 3 sets then I do leg curls and leg exstentions 15 for 3 sets then I do my back muscles on about 100kg 15 for 3 sets then I pull myself up on a bar lifting my legs up to my chest to do stomach muscles, then I do my shoulder muscles and then floor exercises sit ups and where I lay on my stomach and lift myself up using my wrist and holding it for 30 secs twice. How long will it take for me to get toned and hopefully get a 4 or 6 pack?

Thanks