Counting Electronic Circuit Design

I need help designing a counting circuit that allows the user to count up and down manually from 1 to 9999, in multiples of one’s, five’s, ten’s, one hundred’s and one thousand’s. The circuit will require two displays (two sets of 4 7-segment displays). The circuit will require eight 7-segment displays, a total of eleven buttons (up and down buttons for each multiple and a reset all button), an on/off switch and an LED to show wether circuit is on or off. I would like the circuit designed using the computer program ‘Livewire circuit simulator’. If this is not possible then preferably another circuit simulator program. I have attached an image which shows what the final product should look like, however I only need help with the circuit design. Once you have been paid in full, the circuit design will belong to myself unless other agreements have been made.