So I just received some freshly picked Chinook hops from my good friend a couple of days ago and now I am preparing to brew for him an ALL Chinook IPA this sunday. I have a good recipe ready to go, but my concern is using homegrown hops for the bittering of the boil. I know I dont know the AA% so i used the average for that style of hop. Using beer smith i came out with 81 IBUs. is this an OK assumption to assume when calculating hop additions? Also will I get any off flavors like "freshly mowed grass" if i use 100% homegrown? The hop cones came from a plant in its third year of growing. Also I have been drying them on a window screen the past couple of days.