I did a recent flip with much warmer colors, actually used SW Creamy on the walls, and the house sold in 5 days. 

Pull colors from the rug for accessories.

I would do some updates and add some color on the walls and maybe throw pillows etc.

Sounds like an easily executable deal from what you've stated but likely need more color to offer path forward, terms, etc.

My Dad had contracts that had 4 copies in them no need to have carbon paper NCR paper they called it.4 different colors .. the contract was one page and it included the escrow instructions..

Colors, quality of paint, how much prep needed, holes patches etc. 

For one, we use the same colors on all properties so it would have to be painted that color.

Patio door prices can depend on the Model of Patio door you are looking for, for a standard 60x80 in white it will cost $1900.00 colors can be added, and for a patio door 72x80 the cost will be $2100.00 Outswing for a 60x80 will cost $2600.00 installed, and for an outswing 72x80 it will cost $2700.00 installed outswing with Grills for a 60x80 costs $1860.00, and an outswing 72x80 will cost $2300.00 installed.You also add blinds to all sliding and outswing patio doors for an additional charge.

You have an envelope, printed with addressee (stick on address label says junk mail) two color copies, paper, first class postage. 

The problem is you can't afford to properly make repairs when you are dealing with the lower tier properties and go with the cheapest bids doing nothing but putting duct tape on issues that will become recurring or believing you are making the repairs correctly but use inferior labor and materials because its all the property can absorb cost wise.