I am a new user of Sage 50 Premium and am struggling with the Estimate, Contract, Invoice, Receipt process.  

My company process goes as follows: 

I provide a quote to a client for a project for  a set amount, if they agree we sign a contract with the conditions 50% at the time of signing a contract, 40% at the time of shipping, 10% upon reasonable completion.  the time frame is normally 6-8 weeks. 

In the Sage program I need to do the following (I think) :

Generate an estimate, convert the estimate into a contract. I need to show the three amounts (50,40,10), convert the contract to a bill/invoice and generate a receipt for the deposits as I receive them. All the while keeping track of where when and how the funds were handled.  

Help!  I have generated the estimate, converted the contract and this is where I get stuck. Any advice would be greatly appreciated as I am a little overwhelmed here.