Hi yes that's fine. Child benefit must be listed but is not taken into conideration as income when IPA's are considered so that reduces the possibility even further.
I have completed mine 99% just havent saved I&E as completed scared to submit it this early on - 2 weeks to go in case my gas and elec go up which i have a letter saying they did from sept 1st but had no increased figure as yet lol. good luck with your MW x