Success! Took a bunch of flipping back & forth within screens and to the fuse calc page, was finally able to get the fuses displayed
LFuse = FF
HFuse = DE
EFuse = FD
Lock byte = CF
No JTAG
ATMega328
Fuse Enable
HEX file as selected
Lock Bits - No protection
Application Boot Block Lock Bits - No Restrictions
Boot Loader Boot Block Lock Bits - Mode 3 = Mode 2 + 4
Enable Boot Block Reset Vector
Clock - 1111 Low Power Crystal Oscillator 8-16 MHz
Startup Time - SUT 11
Boot Block Size - 256 Words
Selected Medium Fast for programming speed
Vcc - 5V
Connected ICSP header - pushed the button - bunch of flashing occurred, then a Green LED.
Connected the board to its circuit (ribbom cable to LEDs, power) - powered up & it seems to work!