Trade robot

Hi

Please, I need someone who can write the following code:

1) Input a buy order for 4 specific assets at same time

2) Monitor those assets

3) When the sum of those assets are > then X value, sell all of them in the same time

4) Buy all of them again

Please see complete details in the attached document.

Let me know if you would be able to code it and your proposal.

Thank you very much!