I have the -1 sprocket and noticed a considerable gain in grunt down low. I’m a bigger guy, 280pounds and six foot and my top speed is somewhere low 120’s. 0-100 is a blast though. Gas mileage did suffer a bit. All in all, I’d say bite the bullet a do it! Without a doubt.
Just speaking from my experience and knowledge alone, I’m running a -1 front sprocket and stock rear and I’m running 118 link 525 O-ring. I thought about going up in the rear when I went down in the front I can honestly say I’m glad I didn’t. At 80 on the highway I’m around 8k. It doesn’t mind it, just don’t wanna stretch it out further for the drives I have to do often. Just my two sense, -1 in the front is enough and uses stock link count.