It's great that you have some concrete goals - I find it always helps motivate if you are working towards something.
That said - you don't have to do it all in your second year of cycling! Watch yourself for signs that you are getting burned out. Elevated heart rate in the morning or when trying to go to sleep, tiredness, lack of appetite or energy, lack of enthusiasm. Don't kill your passion for cycling by trying to do too much too soon.
I don't see why you can't ride and run in the same day - I know a lot of triathletes do this. I would suggest you really listen to your body and watch any signs of tiredness or soreness. Triathletes should probably chime in on this one...
Your general "plan" sounds good. If you want to do a 200k, though, you are going to need to build up your rides so you get longer rides in. A 40k ride won't cut it if you want to do a 200k. So pick a date or 200k event to do, and plan out your long rides between now and then so you are building up by 10 miles or so a week until you get to a long ride of about 100 miles. Then you should be ready to tackle the 200k.