I usually add the average LTFTBEN to frequencies down to 1500 Hz. Even though you have no logged data, if from some reason you go to higher elevation or your Idle Rpm drops you will hit some of those lower frequencies.
I.E., I keep the same MAF slope..in your case I believe it was +10% LTFT average. Note, when you get your wideband up and running, you will have to switch to the AFRBEN for PE Mode and WOT. In PE mode, you are no longer in closed-loop. It is in essence a form of open-loop. If you get stuck on that, just let us know.
When you get your LTFTBENS ironed out and can log DYNAIRTMP.DMA, it will be a cinch to complete your CALC.VE Table.
Let us know how it goes..Good luck!