What monitors and mounts would I be best with for my set up?

I'm planning a new desk set up for college and I'm going with the Ikea Galant corner desk (black) and I'd like at least two, ideally three monitors. I would like to have two portrait monitors (19 or 21.5 inch) at an angle of about 30 degrees from the desk so that I can read them while looking down. Then at 90 degrees (so just regular monitor position) have a landscape monitor over the top of the two portrait monitors Is there a stand/mount that would allow for this? I had quick look for something to mount them at 30-40 degrees and couldn"t see anything.

In terms of monitors I was thinking of three Asus VS228DEs as they're cheap and 1080p.

Any help or advice would be appreciated, thanks.