Lets assume you have 5000 m2 ...

Lets assume you have 5000 m2 of pitch, you want to put down about 2 cm of water each time you irrigate, so you need about 10 m3 of water. You wouldn't water every day in the UK. Your well should give you that 10 m3 in 5 hours at a flow rate of about 2 m3 an hour.

You should have enough pressure to run sprinklers which will need 2 to 3 bar pressure, though that depends on the particular well pump installed. You should probably include a filter and some form of pressure regulator if pumping direct to spray.

You would need to size sprinklers to cope with the exact flow. It might be easier to incorporate storage and a second pump to run the sprinklers - which would mean you aren't as constrained to a set of sprinklers that add up to exactly 2 m3 an hour,  and could use lower or higher capacity ones as appropriate.