keeping E in "normal" range is great for "normal" people or for guys who are on TRT (the goal of which is to have normal test levels and not low levels). this is completely different thing then someone who is running a cycle of steroids who is far from "normal" .. you really think those blood test ranges of 'normal' were designed around someone that has Androgen levels 20 times higher then a normal person.. no.
on cycle, your androgen levels go up to astronomical levels (your no longer normal) . your body is designed to have its E levels also go up at the same time (at least with test). therefore the "normal" range no longer applies to you.
again, trying to keep E in range as a normal person , natural or on TRT , makes total sense . but its a futile thing to try and do that when your whole goal of running a test only cycle is to sky rocket your androgen levels.
Estrogen is supposed to go up to higher ranges when your Test levels rise up off the charts.. estrogen is very synergistic with elevated androgens. Estrogen becomes a very very anabolic hormone when androgens are elevated (I've said this time and time again, when cattle are injected with Androgens to beef them up for slaughter, they are also injected with a ton of Estrogen to make the growth actually happen .. with 'only' the androgens they would not grow).
I personally don't see the point in running test only cycles yet try and keep estrogen in a normal persons range. why not just run something that does not convert to estrogen in the first place (like most steroids) ?
the reason guys in the off season will run high dosages of Test to their cycles is because test is one of the best compounds at converting to estrogen and thus helping with overall muscle and mass growth. if your not looking for that synergistic effect of elevated estrogen and androgens to help put on size, then theres really no point in running a test only cycle (especially if your just going to block what test does in the first place).
I could write an entire book about thisso I won't go on and on. just wanted to say blocking estrogen to that degreee and blocking DHT (the two things test are designed to do) seems a little bit pointless to me. and seems if thats your goal you'd be better off running a steroid that does not convert to estrogen or DHT to begin with. why cycle with "test only" when you don't want the test only effects.
just a thought
edit : I'm exaggerating my thoughts here to a degree just to drive home a point . of course having some estrogen control and not getting gyno etc. is a good thing on cycle.