The addendum to the original Concordia rules includes an official variant:
In this variant the players do not own any goods at the start of the game. Their storehouse starts with only 4 colonists. Instead they start with more money: The start player has 25 sestertii, the 2nd player 26 sestertii etc. In their first turn players may buy goods as they like paying the prices as shown on the roof of the storehouses. This variant offers an even more flexible start of the game.
Does this make any sense with Salsa?
It seems that it would mean either that players could not start with salt (as they do in ordinary Salsa) or salt would need to be assigned a price (which ordinary Salsa avoids doing).