Making the switch to 8gpm

The last photo is where the leak is. If your looking at it from the front of the pump. Is on the lower right corner where the pump head mounts to the body of the pump. I’ve looked up a reseal not which wasn’t too bad. But due to its age and not being used much lately would you recommend just putting a new pump on, fixing this one and keeping it as a back up ? Honestly I’m not even sure I need an 8gpm. So far just doing residential my 5.5 has done everything I’ve asked it too without an issue.