...AND the 90 large it's going to take to pay off the loan. No where do you show paying off the loan. The payment you provide indicates a 20 year term, so you will still owe over $90K after one year. You also will need to adjust your fuel cost as av gas is about $6 a gallon, not $3. A CBi burns about 12 GPH, so you'll have a fuel cost of about $17,280, not $11,040. I think you are way low at $140 an hour for maintenance and insurance. I'd say it's $200, minimum. Add another $15K. Also, no ATP until you have 1200 hours.
300CBi $115,000
Sales tax $8,900
Fuel $17,000
Maintenance and insurance $46,000 (230 hours)
Payments and interest $9,700
Hangar $6,000
That comes to $185,600. After 1 year, you sell it and net $93,500. You then pay off the loan balance which will be around $90,500 (most of the payments will have gone to interest).
$185,600 outlay ($115,000 for aircraft, $70,600 for fuel hangar, MX, etc) minus $3,000 net on sale (after paying off loan).
$182,600 total cost minus $90,500 loan payoff=
$92,100 for one year of ownership and 230 hours.