Is PE of 10.3 low enough for this type of company/contractor? I...

Is PE of 10.3 low enough for this type of company/contractor? I need more certainty/lower price to justify risk. Margins are tightening in this sector.

'Transfield Services Limited is engaged in the provision of operations and maintenance, asset management, project and capital management outsourcing and infrastructure development services. The Company provides asset management services across a range of industries within the resources, energy, industrial, infrastructure, and property and defence sectors. The Company executes works under a range of contract models, including Design / Build, Early Constructor Involvement (ECI), Engineering Procurement Construction (EPC), Engineering Procurement Construction Management (EPCM), Construction only, Managing Contractor and Alliance.'