Do not lose any sleep getting knocked back by Citi. From my experience, anyone self employed is a good chance of being knocked back with Citi seeming to take into account the card is likely going to be points abused. The Select card is treated differently where they get their upfront pound of flesh of either half or the full $700 annual fare.
Purely as a backup to my Select, applied for a Signature under my wife's name which after initially being approved with all the income verified and accompanying bank statements for business and personal showing 1.5x total debt, my wife then got knocked back despite having only a minor WWEDR card in her name. At the same time, applied for an Altitude Black in my name despite having at least 15x credit card limit of my wife and identical income which was approved.