Annual maintenance costs of living aboard at anchor

[Glassgow22]

Hi everyone my dream is to buy a used boat and live aboard at anchor in the Rio Dulce. I'm trying to estimate my budget to make sure I have enough money to make the leap. I actually don't plan to do any cruising, just living at anchor. I figure I need to plan for annual haul out and bottom paint to make sure the boat doesn't take on water. What other maintenance and/or repair issues do I need to budget for if I just keep the boat at anchor? Thanks in advance for all the advice!!!