I am meeting with a owner of a new loft building, and I may be shooting again. I need some advice, and input as I want to improve on these... so these settings are what I will use given on the situation of the last one. ISO: 100 TV: "1 F: 8 CUSTOM WHITE BALANCE METERING: SPOT (?) AF FOCUS: ONE SHOT Anything else I should know? Should I fire flash or will it look bad?