You can likely get all of that image in the LI post if you change the dimensions. I believe the specs for LI img posts are is 552 pixels wide by 368 pixels tall (or an aspect ratio of 3:2), but yours is vertical. Not sure what LI would think about the CTA button, since it seems competing with thier own desire to sell LI ads.
As for adding links tosocial, when I need to I typically post all in HS, then go to LI to add a link or to add hyperlinks to companies mentioned in it. It’s a pain, but doable.