DIY Handheld game console ( Gamebuino) library programming

I couldn't quite figure out how to ask but I hope it makes since to my explanation.

I'm trying to build a hand held arduino game system using the Gamebuino library as my source code for the game console but I'm doing a bit of an upgrade to the system.

The basic components are

1x teensy 3.2 with 256k ram
1x 3.7v charger
1x 5v step up

Or a powerboost 500 which does both

1X inhaos 2 inch 256k color LCD 2000-7775
1x battery

The original hardware for the Gamebuino utilizes an 84x48 LCD which really sucks graphics wise so the color screen will be a hell of an upgrade both with color and resolution. Add the ram upgrade I can build way better games.

Any way the GB library uses spi and has its own display files but I need to figure out how to link it's out put to go to the new LCD and print my sprites in color.

I tried placing the inhaos library in the arduino libraries folder and I've included its .h file in my program but I get an error when trying to compile that says the 7775 library is missing a maintainer.

I will link to the Gamebuino library but there doesn't seem to be a git hub for the inhaos LCD so it will need to be downloaded.

So what all would I have to do in order get my LCD to work with a different library or what ever?

Gamebuino library

Link with LCD library
http://www.inhaos.com/downcount.php?download_id=134