Query is taking too much time for inserting into a temp table and for spooling

Hi,

I am working on a query optimization project where I have found a query which takes hell lot of time to execute.

Temp table is defined as follows:

DECLARE @CastSummary TABLE (CastID INT, SalesOrderID INT, ProductionOrderID INT, Actual FLOAT,           
       ProductionOrderNo NVARCHAR(50), SalesOrderNo NVARCHAR(50), Customer NVARCHAR(MAX), Targets FLOAT)

SELECT            
 C.CastID,          
 SO.SalesOrderID,          
    PO.ProductionOrderID,          
 F.CalculatedWeight,          
 PO.ProductionOrderNo,          
 SO.SalesOrderNo,          
 SC.Name,          
 SO.OrderQty          
FROM             
 CastCast C              
 JOIN Sales.Production PO  ON PO.ProductionOrderID = C.ProductionOrderID 
 join Sales.ProductionDetail d  on d.ProductionOrderID = PO.ProductionOrderID  
 LEFT JOIN Sales.SalesOrder SO    ON d.SalesOrderID = SO.SalesOrderID               
 LEFT JOIN FinishedGoods.Equipment F ON F.CastID = C.CastID        

  JOIN Sales.Customer SC    ON SC.CustomerID = SO.CustomerID
 WHERE          
 (C.CreatedDate >= @StartDate AND C.CreatedDate < @EndDate)

It takes almost 33% for Table Insert when I insert the data in a temp table and then 67% for Spooling. I had removed 2 LEFT joins and made it as JOIN from the above query and then tried. Query execution became bit fast. But still needs improvement.

How I can improve further. Will it be good enough if I create Indexes on the columns for the temp table and try.or what If I use derived tables?? Please suggest.

-Pep