Andy,
I do understand your dread of losing your hair.
Quote from: AnxiousandyHLT on August 30, 2017, 06:00:01 PMim here to find out what dosage of estradiol i could take with minimal feminising effects on my body. I am already on finasteride but its wreaking my hairline and im now like a norwood 2.5 at 20 years old. Im also on oral minoxidil and shedding heavily. I'll get straight to the point:
I had a sinking feeling when you asked about dosage—not because it's wrong to ask, but because this forum does not allow disseminating that information. All I can safely say is that there is no single right dosage. Whether you go to a doctor or get hold of what's needed on your own, some experimentation will be necessary. In this sense, working with someone who can use tests to assess the concentrations and compare notes with what you yourself are observing is the safest. That said, I also know it can be expensive and perhaps seem embarrassing.
There's one thing I'm not sure I understood correctly—did you mean to say finasteride is wrecking your hairline? If so, according to what I read quite some time ago it can initially cause unusually high shedding as more hairs in the telogen (resting) phase drop out in preparation for a new anlagen (growth) cycle.
Quote from: AnxiousandyHLT on August 30, 2017, 06:00:01 PMWhat dose of estradiol could i take to have an effect on hair?
All I can say is that while any dosage may possibly have some effect, that really is an unknown. Our bodies are different.
Quote from: AnxiousandyHLT on August 30, 2017, 06:00:01 PMWould my penis shrink? ( i have to ask this )
Again, this is an unknown. Mine didn't, but I'm fairly sure most males would not like how it behaves. If yours would shrink or start to perform differently, how would you feel?
Quote from: AnxiousandyHLT on August 30, 2017, 06:00:01 PMDo i need to be on spiro too? Ive tried it and have pills left over but i just shed alot on it.
I would venture to say no, if you want to just combat hair loss. Spironolactone blocks testosterone receptors, but the culprit for androgenic alopecia is thought to be dihydrotestosterone. For hair loss, 5α-Reductase inhibitors seem to be more commonly used.
Quote from: AnxiousandyHLT on August 30, 2017, 06:00:01 PMWould a mild MTF regiment have significant effects on my body? ( i dont mind psychological or mild physical side effects)
Given time, any hormone regimen may have a significant effect on your body.
Quote from: AnxiousandyHLT on August 30, 2017, 06:00:01 PMWhere could i buy cheap, legit estradiol online?
I'm afraid that the legality of online drug purchases depends on the laws of the country you live in. Some countries allow sales to anyone that asks, without regulations. Some require a doctor's prescription. Where they're banned, there is no way to buy them online without breaking the law. As for price, it's usually the lowest where the drug is available over the counter without prescription—unless you have and use insurance to cover most of the cost. To do that, you'd need to work with a doctor, though.
By the way, where I live there are transgender-oriented clinics that will work with just about anyone to safely achieve even somewhat unconventional goals. There may be such clinics in your country as well. While such treatment may not be covered by insurance you may at least get the prescriptions you need. It may be worth some research.
Quote from: AnxiousandyHLT on August 30, 2017, 06:00:01 PMJust to clarify i am a cisgender straight male, i realise what im wanting to do is crazy since im not trans but this hair loss problem is ruining my life. I dont care about relationships, etc im doing this for me. Thank you all and i hope i get some real answers 
Yes, I understand. Please understand that I'm not trying to discourage you... I'm just saying what I can within the rules of the forum.
I'm also quite curious. What drives your desire to keep your hair even at the expense of possibly looking female as a result? You say you're a heterosexual male, but don't care about relationships. You also say you don't even mind psychological effects of the hormones. It sounds like to you, your hair is one of your most important features. Has it always been like that?