Though my kit is underway to my remailer in Florida, and it'll be a bit before I receive it in the Netherlands, I've been looking at the Rocksim files.
I'm sure it'll fly fine, but let everyone be aware that this kit is a bit heavy because of the upscale, and
needs high thrust G motors to achieve stable flight getting off the pad.
I use a standard 2m rail (6 ft), and generally try to calculate that it's going fast enough at about half the rail length that the fins are steering it (stable flight) as a rule of thumb. That way both rail buttons are still in contact with the rail.
The rocksim files came with a few flight simulations, using the G35EJ and the G79W. These fly fine, but need more than 2 meters of rail before they become stable. Even the H55W needs 1.75m of rail to become stable. Not many of us use rails longer than 2m (6 ft).
The possible consequence of using the motors used in the flight simulations could be that the rocket isn't quite stable coming off the rail, catches a gust of wind, weathercocks, and goes horizontal. I'm all for safety, and try to avoid that situation.
I fly Cesaroni motors, and would recommend trying a G126-WT or a G125-RL, or something similar from Aerotech. These become stable at about half the rail length.
I've ordered the 38mm version, and even then I have to watch what I use. My go to motor is usually a 2-grain H125, but even than it doesn't have enough thrust to be stable coming off the rail. I'll be using fast-burners, like the H225-WT, for first flight.
@nabooengineer - you might want to include higher thrust motors in your rocksim files as examples, and remove the lower thrust ones.