I own a Jabiru LSA 55 (55-0730) with the 2200 engine, The LSA's were the forerunners to the J120's.
25hr services by an L2 are around $350
100hr, I haven't had one yet, I purchased the plane last February, but I've booked it in next month. I've budgeted for $1000. I like to over budget than under.
Insurance: $1000/year because I pay by the month, if I paid upfront, it would be just under $900.
Hourly costs: I put aside $50/hr plus the fuel (Avgas). I budget and plan for 15L/hr but I actually only use 12-13L/hr
I have a 2 part budget for my aviation:
Fixed costs, an amount I pay every fortnight whether I fly or not, and an hourly cost, which I put aside after each flight.
Fixed costs cover:
Monthly hanger fees, insurance, loan repayments, x12÷26,
plus the yearly rego fees ÷26.
May be an idea to put something away for unexpected repairs and maintenance like replacing avionics, skin refurbishment etc. Possibly allow $1000 per year for this ($38/f/n)
I also merge some other non aircraft related commitments into the fixed costs, such as license fees, Ozrunways subscription, BFR costs, ASIC card. I convert all these costs to a fortnightly amount and add it to the fixed costs.
Hourly costs can include:
25hourlys ($350÷25hrs=$14),
100hourly ($1000÷100hrs=$10),
Engine TBO ($15000÷1000hrs=$15) This could be much less expensive, the Jab overhaul quoted above is only $5000 which would be only $5 per hour instead of $15, I'm budgeting for a total engine replacement,
Prop replacement ($2000÷1000hrs=$2)
Fuel $30/hr, I don't have my fuel in the hourly costs as I pay my fuel separately, I keep fuel costs separate from my aviation account.
If you haven't done so, I'd recommend getting a L1 rating so you can do minor maintenance on your aircraft. I'm not mechanically minded so I get the bulk of my maintenance done by an L2 but there is minor stuff that I can do like the simple AD's and service bulletins that come through from time to time.
I tend to over budget so my aviation account is looking rather healthy ATM
My plane is also reluctantly up for sale.