If you find that you suffer from mood issues from a certain compound, you could always try to use something else. Anavar would be another option. Or lower doses would be an option. You don’t “need” masteron and if you do want to you use, sure, you can certainly get an effect from less. If you are in shape, 4 wks at 300mg EW would be enough to show a good improvement in hardness. Then by the second show, 6 wks into masteron at 300mg, your results would be even better. Especially if you are running tren, you should be plenty hard. Personally, I don’t see any reason to cut the tren. In most all cases, I don’t see tren causing any added water. I would run it through the first show and right up to the next.