Here's some general guidance on 717 takeoff performance...I hope it helps!
Trim: Most of the time, the takeoff trim is within the 4.0 to 5.0 ANU (Aircraft Nose Up) range. You should never need nose down trim.
Flaps: In addition to detents at Flaps 13 and 18, the 717 uses a "Dial-A-Flap" system, allowing for any flap setting between 5 and 20 for takeoff. You can set less than 5 using the system, but the limitations specify Flaps 5 as the minimum takeoff setting. Flaps 5 is used almost exclusively. You'll rarely need more than Flaps 13.
Power: On a standard, sea level day, takeoff power is 1.53 EPR for BR715 C-1 engines, and 1.44 EPR for BR715 A-1 engines. N1 is only used for reference, and should be around 96% to 98%. Climb power under the same conditions is approximately 1.38 EPR / 88% N1 for both engine types.
The 717 has four power settings available: Normal (i.e. Maximum), Flex (using an assumed temperature like other aircraft), T/O1 (a 12% derate), and T/O2 (a 25% derate on C-1 engines). The reduced power settings are computed by the FMC. I don't have access to those power settings, although 1.38 EPR / 88% N1 is a rough target for T/O2.
Speeds: On a standard, sea level day, a C-1 engined airplane with a takeoff weight of 109,000 lbs using Flaps 5, the takeoff speeds are approximately: V1 = 133; VR = 141; V2 = 149. With a normal rotation rate, liftoff will normally occur around 150 to 160 knots. (Yes, the 717 has a teeny little wing!) Under the same conditions, an A-1 engined airplane's speeds are approximately: V1 = 130; VR = 143; V2 = 149.
I haven't actually flown HJG's 717 yet, but it sure looks nice. Thanks to everyone for their hard work.
Oh, I almost forgot. All of this data I just spewed is based on the real aircraft, not the HJG model. Hopefully, it's pretty close. ;D
Al