I was thinking about making my own forks, similar to someone who made his own at work. I believe the plates were about $100, and the steel came to $400. New forks would cost me $700 (for BL20A). I finally decided that my time was worth something and the purchased forks would be better at taking side loads than my design. I ended up buying the new forks and am VERY happy I did. I have moved hundreds of rocks by just tipping the forks down and popping them up with ease - much better than what I had thought of designing. Remember, the extra cost over a lifetime will probably be worth it. The forks themselves are expensive because of the liability insurance the companies must pay because of being sued. That is why pound for pound they are 3 times more expensive than box scrapers.
I also didn't like the idea of using a back blade going backwards down the driveway pushing snow. I thought of rigging the bucket with an angled board to push the snow to the side. I ended up getting a lightweight rear blade and using that last winter - it worked great and had a very easy time going backwards (sharp steering). What really helped me was the skid plates on the blades. I also purchased the front wheel chains since the snow can get pretty heavy sometimes - never got the chance to use them though after I purchased them - easy winter.
My suggestion is to purchase front chains, new Branson Forks, and a cheap rear blade for the first year and decide after that what you want to do about pushing snow - you can always use the rear blade. I got my rear blade for $35 at a garage sale (7'). You can buy them new for as little as $250.