It is 2012, 2 years after the succession to power of Kim Jong Un, the unruly warmongering son of Kim Jong Il. After the continuation of nuclear arms production and increased aggression towards its neighbour South Korea the worlds coalition forces have begun a pre-emptive attack. These early missions are the subject of this modification "Task Force Black" and follows one such complete special forces raid carried out by the TFB, a British SAS unit utilized in the opening gambit of this war. The primary mission of this campaign is to eliminate the threat of a series of Musudan IRMB units stationed in the North Hamgyong province. These units pose a direct threat to US forces stationed on Guam and it is anticipated that the North Korean military would not hesitate to utilize this advantage during the opening hours of the US led invasion. Therefore it is essential that these units are neutralized prior to the attack.
Its looks like your are falling from outside the earths atmosphere
The curve might be exaggerated a little too much yes, but it is true that you can see a slight curve on the horizon when jumping from a plane like that.
the "curve" can be reduce quite easily however you do get some curvature on the horizon from 30,000 feet like this. As for view distance it is 4.5km (9km diameter) in-game which is right on the limit of what the engine will draw. Unfortunately attempting to get the same kind of viewdistance you would see at 30k feet is next to impossible i'm afraid.
If this engine supports a 3D background then I think it would be possible to make this idea come true.