Tren e is not harsher than tren a. Because acetate clears out within a couple days if you do get sides you cannot deal with you stop and in 2-3 days you are fine. Enanthate would take a week just to mostly clear out so the back to normal timeframe is greater but tren is tren. The during is the same its the after which differs based on ester.
Having said that what myself and countless others have discovered is running lower test doses enables you to ramp up tren and barely notice the sides.
When I used to PL I would routinely hover around the 240's in terms of bodyweight. BF% was probably mid teens so basically I was 200lbs lean and 40lbs fat less say. Waist was 38". In the last 6 months I decided to move away from PL and return to a more BB focus. My weight is now around 220 but my BF% is around 10%.
So basically 200lb lean and 20lb fat. Waist is now 34". The interesting part is in some cases Im just as strong at 220 as I was at 240 even if I carry approximately the same lean muscle. Im pound for pound stronger than before.
Like your proposal I used to run high test and medium tren [1G test and 400mg tren]. I got gorilla strong off train and my training approach but God in Heaven were the sides rough. Sweating, de-hydration, elevated BP, no cardio ability you name it I got it. Then I was introduced to the concept of low dose test and high dose tren [several purported the idea but I will acknowledge BBB for credit's sake].
Through a combination of diet, training and compound selection I reached the point I previously spoke of where at 220 I was as strong as 240+. My specific compounds were dosed as follows: Test 200-250mg/wk, Mast 600mg wk, Tren 600mg wk, I always take 40mg of dbol before training as well.
With this lower test dose I was able to run 50% more tren than before and the sides were substantially less than ever. In the past 400mg of tren put my BP at 150/95 or there about. Thats with the 1G of test a week of course. With just 200-250mg of test even with the 600mg of tren a week [and the mast though I dont think mast elevates BP or at least it does not have that reputation] my BP was/is 110/75.
I get very little night sweating with this protocol. My windedness going up a flight of stairs in minimal. To give a percentage I'd say my "tren sides" were/are 85% less noticeable/bothersome on this low test protocol versus high test...and Im using 50% more tren.
So again if lean muscle is the goal I cannot recommend a better trifecta than your [and probably my] favorite.
I strongly urge you to consider the low test especially if you are adversely effected by the tren with higher test doses. Some guys can run high test and high tren but they a few and far between.