It's actually possible to compress that startup significantly too. The most time-consuming part of the A-10C's start up process -- by far -- is the roughly 4.5 minute wait for the navigation system to align.
If you skip the ground align (the system can align in the air; it just takes longer and is a bit less accurate but the latter isn't modeled in the sim), someone that knows what they're doing can have the plane rolling down the taxiway in ballpark 90 seconds.
I'm not an A-10 pilot, but I have a couple hundred hours pretending to be one in DCS. ;)
If you skip the ground align (the system can align in the air; it just takes longer and is a bit less accurate but the latter isn't modeled in the sim), someone that knows what they're doing can have the plane rolling down the taxiway in ballpark 90 seconds.
I'm not an A-10 pilot, but I have a couple hundred hours pretending to be one in DCS. ;)