Hi Jobo
That amount of oestrogen is unlikely to be too high in that your blood levels of estradiol will be somewhere in the range they would occur naturally.
However it is generally advised to start lower and then gradually increase with oestrogen to minimise side effects from sudden increase (although these usually settle - but can put some women off if they go on for a while).
As you are young though, it's good to have a decent level of oestrogen because your body would have been producing it naturally at your age. The trick is to find the "sweet spot" because with HRT you are having a constant level of oestrogen all the time whereas with your menstrual cycle it would fluctuate - and give very high levels at ovulation. In pregnancy levels are exceptionally high but then so are progesterone levels too - so this is a special case.
Are you changing from a different type of HRT or are you now starting again after having had none for some while? If so I would start slowly but otherwise why not go for it? If you are nervous you could cut a third off and start at 50 mcg and then gradually increase. I have always been on 50 mcg patch from when I started HRT at around 54 and now in my 60's. There are also several women on here who have 100 mcg patches.
The only thing I am puzzled about is that if you are progesterone intolerant - you are taking the utrogestan all the time. Many of us who don't get on with the progesterone part of HRT, even the bio-identical one like Utrogestan - still prefer to take it on a cycle (but the downside is we have a bleed). However as it is like natural progesterone - you may find that you tolerate it well and it was just the synthetics that you were sensitive to!
Don't be scared - this is the most natural type of HRT you can get!
Keep us posted and hope you feel better very soon
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Hurdity x