Hey guys, just bought a Lecia 1600B for my 7mm rem mag. I'm trying to stretch out far and hit some 1000 yard targets soon. My question is the Leica 1600B gives me the range obviously, angle, Barometric Pressure and temperature. What else do I really need to put into my ballistics app besides a wind speed and direction? Probably just humidity? I can probably find a cheaper alternative than a Kestral for just those 3 variables right? Any recomendations?