You can carry as many concealable weapons as you can carry concealed. For me that means ususally two and sometimes three.
If a sign meets the requirement of the law based on size, color, text, etc but is "obscurely placed", then the sign does not meet the lawful standard required to make it enforcable. Why would you tell a business that their sign does not carry the weight of law so they can fix it? Sometimes the best thing you can say is nothing at all. It sounds to me like this might be one of those times. Think about it.
SECTION 23-31-235. Sign requirements.
(A) Notwithstanding any other provision of this article, any requirement of or allowance for the posting of signs prohibiting the carrying of a concealable weapon upon any premises shall only be satisfied by a sign expressing the prohibition in both written language interdict and universal sign language.
(B) All signs must be posted at each entrance into a building where a concealable weapon permit holder is prohibited from carrying a concealable weapon and must be:
(1) clearly visible from outside the building;
(2) eight inches wide by twelve inches tall in size;
(3) contain the words "NO CONCEALABLE WEAPONS ALLOWED" in black one-inch tall uppercase type at the bottom of the sign and centered between the lateral edges of the sign;
(4) contain a black silhouette of a handgun inside a circle seven inches in diameter with a diagonal line that runs from the lower left to the upper right at a forty-five degree angle from the horizontal;
(5) a diameter of a circle; and
(6) placed not less than forty inches and not more than sixty inches from the bottom of the building's entrance door.
(C) If the premises where concealable weapons are prohibited does not have doors, then the signs contained in subsection (A) must be:
(1) thirty-six inches wide by forty-eight inches tall in size;
(2) contain the words "NO CONCEALABLE WEAPONS ALLOWED" in black three- inch tall uppercase type at the bottom of the sign and centered between the lateral edges of the sign;
(3) contain a black silhouette of a handgun inside a circle thirty-four inches in diameter with a diagonal line that is two inches wide and runs from the lower left to the upper right at a forty-five degree angle from the horizontal and must be a diameter of a circle whose circumference is two inches wide;
(4) placed not less than forty inches and not more than ninety-six inches above the ground;
(5) posted in sufficient quantities to be clearly visible from any point of entry onto the premises.