Hammering during the early hours as a courtesy is a sentiment I share, since I work close to neighbors as well. However heat treating at night should produce very little noise, and reveals the true colors of temperatures to the naked eye. Sunlight makes it near impossible to tell the temp, especially considering that if you are in shade the color will be different from if you are in direct sunlight. I would recommend that if you are going to forge a blade, start with a material thicker then 1/8th inch. A 1/4 in chunk of flat bar allows a little elbow room to test the waters for various forging techniques. It also allows you more material to play with on the grinder, since that is an entire skill set in and of itself. One thing that used to always get me when I was younger was leaving the blade in the forge too long, and allowing it to get too hot. That can cause some serious grain growth. When I was 14, I used to leave a whole series of blades in the fire while I worked on one, and after long enough, they will literally crumble in your bare hands(when cooled down, of course). Best advice I can give you is read read read. Excellent sources here on the forum. Best of luck!