No real need for a spreadsheet.
Hangarage
In my area (midlands) you are looking at £2500 - £3500 at a licensed airfield or about £1000 - £1500 on a strip. Check your area by asking around
Insurance
For a PA28 / C172 you are typically looking at around £2000 (assuming a 1970’s aircraft). A 2 seat permit machine would be around £500 - £1000. Ask around for Spain
Maintenance
An average of £4500 to £5500 all in on a C of A machine per year. Note this is the likely average over 5 years, it is likely to cost more in the first year as your new maintenance organisation gets to know the aircraft.
Fuel
Assume a number of hours usage and look up the LPH for the aircraft you are looking at. 100 hours in a 180hp is likely to cost you around £5000 at UK prices
Depreciation
This is a hard one as some aircraft types have lost 25 – 30% in the last few years and others have appreciated by 10 – 15%. Something with low operating costs is a safe bet.
Engine fund
Take the cost of replacement divide by the number of hours left before TBO and add this to your hourly cost. A typical spamcan engine with 500 hours on it and a TBO of 2000 would come out around £15 per hour.
Hope that helps
Rod1