several libraries

I started a largeish project for a countdown clock (kitchen timer). Using a LCD 5100, a timer object and a servo to strike a gong. Running into all kinds of trouble due to conflicting libraries. Libraries used were:
#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Adafruit_PCD8544.h>
#include <Servo.h>
#include <SimpleTimer.h>

what could I do to make this work? Even thought about moving the servo to a separate arduino. Any hints??

post the error log please

You could probably get by without the SimpleTimer library if you just use millis() to manage time as illustrated in several things at a time.