Use the RFM before you fly to check you have at least OGE power available at the expected temp/pressure/AUM at the LS.
Then deduct 5 or 10% of the MAUM indicated by the graphs - that will give you a thrust margin.
Finally do an in-flight power check within 5nm/500' of your LS to confirm you can get max power.
Land safely taking into consideration local wind effects.