Buy or lease the airplanes?
Buying puts the capital up front and keeps the hourly economics lean; leasing (or leaseback) keeps startup costs low but hands part of every flying hour to the owner. This tool models both so you can see the crossover for your numbers.
What goes into one-time setup costs?
Certification and legal work, initial insurance deposits, avionics or interior refreshes, tooling, a website, and the first round of marketing. Groups routinely underestimate this line - when in doubt, round up.
Why reserve months of runway?
Utilization ramps slower than anyone plans. Two to six months of fixed costs in the bank is the difference between a slow first quarter and a fire sale. The estimator counts that runway as part of your startup capital on purpose.
Where does Resyrv fit?
From day one it is the scheduling, billing, and maintenance layer, so the operation you are pricing here runs without spreadsheets. Software is a rounding error in this budget; the leakage it prevents is not.