Only if you're very inexperienced will this be tricky, once you're senior nobody bats an eye when I ask for things to be changed in the contract.
A contract is part of communicating how we will work together. Demonstrate that you're competent by clearly communicating the changes you want and why you want them and if they react back poorly then you dodged a major bullet, since they'll also communicate poorly in day to day functions.
I'm not saying you'll always get what you want, but there should never be anger, and just because you're sent a signable document via DocuSign doesn't mean you have to sign that version of it.