Realflight G2 is a good simulator. That said, IT IS A SIMULATOR. The planes will USUALLY fly SIMILAR to the actual model. They WILL NOT fly the same unless you do A LOT OF TWEAKING to the plane and engine.

If your wind is 7mph with 5 mph gusts ????, I suggest the following settings for Realflight:

Set the wind to 8 mph with 11 mph gusts. Have the wind QUARTERING the runway (coming across the runway at a 30 - 45 degree angle ). Set the wind direction to a 20 degree variable and set the "gustiness" control at 75%. In addition, set the sim to REALISTIC for take off and landing.

Once you learn to fly the sim with those conditions, you will have few difficulties flying the actual plane.

Another "trick" I do when using Realflight, especially with warbirds, is:

I make sure that the total weight of the plane AND square inches are the same as the model I will be flying. THEN I ADD about 6 oz to the total weight of the plane - divided as follows 20% to the tail surfaces, 30% to the main wing and 50% to the fuselage. What this does is increases the wing loading. The plane is going to land AND fly faster and respond a little slower in the air. When you actually fly the warbird, you should not have any surprises at all (well maybe pleasant ones ) since you have basically setup a "worse case" scenario.