Two, as @not_your_vase mentioned, sounds like JohnSmith2. Also, "X," imho, will be the "gimmick" name trend of the 2020s, which will possibly look very lame and outdated in the near-ish future (if not now). Do you use Exim specially somehow? Why the reference? Will your market appreciate that reference?
I've been kicking around the name "Orbital Edge" this week for fun. There is an Orbit's Edge in some other industry, but I think that domain is available. Other random ideas (because that's what I do), and which may pair well with a memorable logo: Vertical Bridge, Meridian's Gate, Obsidian Sail, Ocean Divide.
Obviously I'm in a double-word mood. Your mileage may vary.