Yes. Mix up the gallon of D76. Call that your stock solution. Just before developing, figure out how much solution you need to cover your film. Let's say you need sixteen ounces of solution to cover your film: take 8 ounces of stock solution and 8 ounces of plain water to make up you working solution. Try to have your working solution 68 F. Use your working solution once and throw it away.
Stop bath--thirty seconds to a minute shall do just fine; use constant agitation.
Fixer: with fresh fixer, pour it in and agitate gently for about a minute. Then you can take the lid off if you desire. Fix for 3-5 minutes, depending; agitate in the fixer every thirty seconds or so.
Read the link to film developing provided above. Good luck, have fun; and keep asking questions. We're here to help.