I would not use rapid fix with Albumen. Use a standard fixer - I use TF-2. I make my albumen from the egg whites sold in the grocery store - they come in a container like a quart milk container. I then make a large quantity of paper over the following weeks and let it age by air drying rather than using alcohol, though there's nothing wrong with the alcohol method.

I'm not usually a magic bullet believer, but the Richeson brush is one. Search the name here. It has very soft artificial bristles that do not absorb the silver nitrate the way others do.

Good luck.