A word of advise - use the best quality plumbing and before burying it, or embedding it, perform a 2 hour hydro static pressure test to detect any leaks. Some of the 'plumbers' do very shoddy work and use the cheapest material available. Once a system is embedded as they do here in Thailand repairing a leak becomes a major undertaking! Been there done that!
https://www.mcwaneductile.com/blog/how-to-successfully-prepare-and-complete-a-hydrostatic-test/
I use Hitachi pumps (we have 2 homes) and have a 300W and 350W - especially helpful if you plan on watering your lawn, etc.