looks like its off to a good start. how much easier do you find it for watering with proper irrigation system vs. hose and sprinkler, assuming both systems running on timer.
mikeo, personally having the irrigation system is much easier for me. I had an old irrigation system at this house when we purchased but it wasn't working so I used a soaker hose for a couple of years. Even though I purchased a longer one than I needed and trimmed it to my exact lawn size it still will never be able to provide the even coverage as sprinklers do.
When I laid my back lawn I had a look at the system and fixed it up a little and now I'm laughing. I set my sprinklers to come on at about 4:30am to get the most benefit from watering and I can set my intervals also. Having said this, even if I didn't have an irrigation system and just had the pop-up's attached to the garden tap I'd still prefer it simply due to the better watering the sprinklers do.
My 60m2 lawn with 10 Hunter MP rotators cost me $230 all up including poly pipe and all fittings. Also my system runs in a loop rather than having 2 ends of the poly capped off. MP Rotators are a little more expensive than other types but they're the only sprinklers I could find that would allow me to run all 10 sprinklers at the same time (I could have run up to 16 with my mains pressure).
Hope this helps!