Increase the character count in notes to be greater than 1000

I'm in the trades industry where my job estimates requires detailed information. I need to be able to add numerous pages of information with my logo to be on top of each page especially when tendering for the larger jobs. Limiting the character count to 1000 means I have to use my own templates in word. It is unprofessional and most likely costing me loss of work. I am currently looking at other software that provides this.