I had my eyebrows tatooted whilst on treatment which I am eternally grateful for. Use a perment makeup tattooist and you can have featherlight ...which really does look like hair. It makes a huge difference to your face. My hair is just growing back and I too have a very high forehead with receding sides. I am using a L'Oréal hair growth product recommended by the person who does our wig fitting. I've only been using a week so can't tell you if it will help.
I have a friend who had a wig made for her. They matched her hair colour and style exactly. It even had grey. Unlike many of our loan wigs this one really does look like her real hair. ..and it is made of real hair. I think really even if thousands of dollars...this would most definitely be worth it.. ..you are worth it.
I suppose other options are really to look at is headgear. I never wore my wig but quite enjoyed my scarf tying and there are many sites. ..especially for Muslim women...that have fantastic ideas on headgear.
I am sorry for your loss and there really are no words that will comfort you. Know that we are here to support you as best we can. Take care. Kath x