For reference, the plane's length is 185 feet and has a wingspan of 120 feet. What I'm aiming for is for it to fly at least mach three at 100,000 feet (with autopilot). Right now though, when I first created it, I gave it the flight dynamics of a supersonic jet DC-3.

help would be appreciated.

Thanks in advance

System Specs: HP 2000 Notebook PC; Windows 8.1 64-Bit; 4GB RAM; AMD E-300 APU w/ Radeon HD Graphics (2 CPUs), ~1.3 GHz; AMD Radeon HD 6310.