The manifold hoses can be rebuilt by a competent a/c shop. They will replace the rubber portions while retaining the metal manifold assembly and end pieces. Quality is the same as new. Be sure to replace the valve cores for the service valves - they get tired & leaky over time. You'll find that going this route will save 300-500 dollars.

You'll need to add oil because you will be replacing the receiver/dryer. It's doubtful you lost much oil through the hose. Refer to the shop manual on how to determine the correct amount of oil to add. Two ounces or so is typical with a dryer, but you need to research it. Be sure to use the correct oil as well, otherwise larger problems loom down the road.