Keep three lists
Make one list for things you buy or arrange once, a second for recurring costs, and a third for your time. A single equipment total cannot describe the whole project. Include delivery, installation where needed, consumables, inspections, replacement parts, subscriptions and travel when they apply to your choices.
Record what you already have
Mark items as owned, borrowed, still needed or undecided. An item you own may still need an inspection, repair or an accessory before it can serve its new purpose. Write down that dependency alongside it. Leave an unknown price blank rather than treating it as free.
Use a normal week as the unit
Think through the tasks that will actually recur: moving supplies, checking equipment, cleaning, tending a garden and preparing to leave. Estimate your own time, then revise the estimate once you have experience. Separate active work from waiting time and keep optional upgrades separate from essentials.
Compare complete choices
When comparing two options, include their different requirements and ongoing work. Keep dated quotes or manufacturer information with the decision. The cheapest individual product need not create the simplest project. Your useful outcome is a plan you understand and can maintain, with the unresolved costs still visible.