We recommend initiating the calls at 70% capacity of your max concurrency for your account (by default it is 10, so that means 7 calls at once per campaign) While actively monitoring the calls and campaign logs, when the campaign of 7 calls have completed, start another campaign of the same call volume.
If you have an estimated call time for each call, you can schedule the campaigns instead of initiating them manually. For example if you have a max call time of 5 min per call, you can schedule your 7 call campaign 10 minutes after your first campaign starts.
You can get through your calls faster if you increase your concurrency limit, but with the amount of calls you are looking to accomplish per day you may not need it. With the method mentioned earlier, you will be able to get through almost all 60 calls in your first call window if there are no issues.
If you have any questions please feel free to reach out