Hi,
I have experience for 15+ years in electronics/embedded development. I have several years of advanced AVR/arduino development, including library development from scratch. Practically all Arduino AVR boards used, like: 2009, 2010, UNO, MEGA, NANO, MICRO, MINI and others like DigiSpark (attiny85). Several shields used like Ethernet (W5100, ENC28J60, etc.) with various IP protocols implementation, various graphical TFTs with and without touchscreen and various BUS types (parallel, SPI, I2C, etc.), all kinds of sensors and buses, serial and parallel memories, etc.
Regarding your "project", besides the signals you have already connected, you still need to connect another 8 signals lines. I can easily let you know what lines connect to which arduino pin, going through the source code of that LCD adafruit's library (already did some checks).
If you are interested in my bid, feel free to contact me.
Best regards,
Carlos.