Since I probably missed the opportunity to round up and reseed with KBG this fall in N. Illinois, I was wondering if I should have an irrigation system installed instead, either professionally or myself. I probably have 14-15k feet of lawn (28k lot). Normally, during periods of no rain, I run a "rain train" on slow speed, but it usually takes 2 days (5-6 hours each) to do the back yard. Front yard can usually be done in 6-7 hours. During this post, I tested the "rain train" and it puts out almost 3.5 gal/min, which means that I need to double the times for 1 inch of water. I am wondering how professionals view the importance of an irrigation system or is it overkill? If an irrigation system is worthwhile; I am handy and have plenty of time (currenty laid off). Any thoughts on DIY? My wife has a good job so we could go the professional route if DIY is not recommeded.