I would prefer the Corsair PSU vs the raidmax. They seem to be known for being very budget based equipment.
As far as the 2400g vs the 1400. The 2400g is preferable, but I seem to recall folks saying there was some kind of slight performance hit of using a Ryzen cpu with integrated graphics(like the 2400g) vs one without. If it's between that and the 1400, I would go with the 2400g I think, but you might see if you see a 2600 for a similar price. I don't think the 2400g is a deal breaker by any stretch.
If you wanted to trim the budget a little more, here is an option.
https://de.pcpartpicker.com/product/PFMwrH/xfx-radeon-rx-570-8gb-black-edition-video-card-rx-570p8dbd6
the 580 4gb card is good, but the 570 is close to it. I think I'd prefer the 8gb as well. Plus it opens the budget for a better PSU than the raidmax, and the 2600 possibly.
Here's a post from reddit where they were discussing that topic actually.
https://www.reddit.com/r/Amd/comments/9uiaio/rx580_4gb_vs_rx570_8gb_for_longterm/
If you look at some youtube videos, you can get an idea of the performance difference. But the rx 570 should be close to the 580. And having the extra vram should help it. With 4gb, you may find yourself turning settings down sometimes anyway.