Same Co. as MC (I guess):
NTOP (which is presumeably what you mean rather than MTOP) gives a more fuel efficient take-off than flex power. But Co. policy may be determined by your engine leasing contract.
Not sure what you mean by MCP ... MCL for the climb? The difference between 850/MCL (using MCL discrete button) and 900 (which gives you MCL) is relatively insignificant, but we use 850/MCL primarily because the cabin noise suppression system (NVS) is 'tuned' at 850Np.
As MC says this aircraft will burn 2% of all extra fuel you take off with, unnecessary tanking simply wastes fuel by burning some just to carry some.
Your Operational Flight Plans must be prepared using a published profile of some sort - we use the Bombardier recommended "Type I climb/MCR (Vmo-10) cruise/Vmo-10 descent on 3degree FPA". We have the IAS versus Pitch argument - IAS is the only mode mentioned by Bombardier in the AOM, Pitch mode is a hangover from the Dash 8-300, in Pitch you cannot adjust rate of climb without changing speed, in IAS rate of climb is adjusted by power changes (no risk of losing ALT SEL), etc etc.
In any enroute wind condition, get up to FL150/FL180 asap (210kt) for best TAS and better fuel flow - then decide to go higher or stay there, depends on Mass, ISA Dev, Head/Tailwind, VMC/IMC (icing), Early/Late on schedule.
Once in the cruise review the ETA (in FMS), if early consider reducing speed to give ETA closer to STA. Your figure is probably close at LRC, we can easily save 10% of Trip on a 1h15 sector by flying about 210kt IAS, for a flight time difference of less than 10minutes
Again we 'discuss' the Flap 15/Flap 35 issue regularly, for us Flap 35 is mandatory on LDAs 1800m or less. The Ops Manual says Flap 35 is recommended, but the spoken/unwritten preference is for Flap 15 when possible. Flap 15 with RDC NP is prefection (in a turboprop): it is smoother, quieter, uses less fuel, saves flight time, reduces runway occupancy time, simplifies the go around and the engine failure on approach, and gives you the landing attitude (just reduce the sink rate at 20ft)