You shouldn't buy an APU if you will be using a dedicated card, as you will not be using the GPU component anyway.
For the 5th time today, to anyone who is asking this question;
I don't play 2018 games in 1080p 60 fps ultra, I don't even play any game newer then 2010. So to me it's very very usefull to have 2200G in case when somethings hapends with real graphic card. And 10€ price difference between 1200 and 2200G, you need to be really really insane not to take it in my case.
Again, I'm very very light gamer. And in past I have own GTX 650, which was amazing for my use, and 2200G is about that range, so .....