Contract Renewal Automation in Salesforce CPQ

///***Batch Apex Class***

global class RenewContractsBatch implements Database.Batchable<SObject>, Database.Stateful {
	global Integer recordsProcessed = 0;

	global Database.QueryLocator start(Database.BatchableContext bc){
		return Database.getQueryLocator(
			//This is where you input the conditions for the records which you wish to set renewal for 
			'SELECT SBQQ__RenewalForecast__c, SBQQ__RenewalQuoted__c, Id FROM Contract WHERE SBQQ__RenewalForecast__c = FALSE AND SBQQ__RenewalQuoted__c = FALSE'
		);
	}
	global void execute(Database.BatchableContext bc, List<Contract> scope){
		for(Contract contract:scope){
			contract.SBQQ__RenewalForecast__c = TRUE;
			recordsProcessed = recordsProcessed + 1;
		}
		update scope;
	}
	global void finish(Database.BatchableContext bc){
       // Get the ID of the AsyncApexJob representing this batch job
       // from Database.BatchableContext.
       // Query the AsyncApexJob object to retrieve the current job's information.
       AsyncApexJob a = [SELECT Id, Status, NumberOfErrors, JobItemsProcessed,
          TotalJobItems, CreatedBy.Email
          FROM AsyncApexJob WHERE Id =
          :BC.getJobId()];
       // OPTIONAL: Send an email to the Apex job's submitter notifying of job completion.
       Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
       String[] toAddresses = new String[] {a.CreatedBy.Email};
       mail.setToAddresses(toAddresses);
       mail.setSubject('Contract Renewal Batch ' + a.Status);
       mail.setPlainTextBody
       ('The batch Apex job processed ' + a.TotalJobItems +
       ' batches with '+ a.NumberOfErrors + ' failures.');
       Messaging.sendEmail(new Messaging.SingleEmailMessage[] { mail });
	}
}

//***Schedulable Apex Class***

global class RenewSchedule implements Schedulable {
    global void execute(SchedulableContext ctx) {
        RenewContractsBatch batchObject = new RenewContractsBatch();
		Id batchId = Database.executeBatch(batchObject, 1);
    }
}

//***Anonymous Apex to Set Up Scheduled Apex Execution***

RenewSchedule c = new RenewSchedule();
String sch0 = '0 0 * * * ?';
System.schedule('Renew Contracts 0', sch0, c);

String sch1 = '0 10 * * * ?';
System.schedule('Renew Contracts 10', sch1, c);

String sch2 = '0 20 * * * ?';
System.schedule('Renew Contracts 20', sch2, c);

String sch3 = '0 30 * * * ?';
System.schedule('Renew Contracts 30', sch3, c);

String sch4 = '0 40 * * * ?';
System.schedule('Renew Contracts 40', sch4, c);

String sch5 = '0 50 * * * ?';
System.schedule('Renew Contracts 50', sch5, c);