Frankly, that's the most hare-brained scheme for feminisation that I've ever seen.
Simply removing your testes will not cause any major feminisation, all it will do is drop your T levels. This may cause issues with the adrenal gland going in to overdrive in an effort to 'correct' this drop. Taking a 5α-reductase inhibitor, such as finasteride, will likely do nothing but give you side effects. With little T to convert to DHT, it's essentially a waste of time and money.
A continued lack of any kind of sex hormone, be it either T or E, will lead to osteoporosis. Don't mess around with hormones, they have the capacity to kill you - or worse, leave you severely disabled.. Go talk to a doctor who knows what they are doing, as the plan you've presented is not smart or safe.
Oh, and just an aside.. I'm not a guy..