i dont' see much point in omitting it - if you can put on your resume that you were on home duties AND operating a small business, you show you're able to multitask. if they don't want to employ you based on you having children, they're not really going to be understanding later on if you DO need time with your kids - and they're probably NOT the employer for you. something to think about is having a contingency plan if your kids are sick that you can outline in an interview if asked. so something like - kids are in daycare but if daycare is unavailable due to colds etc, my mum will step up, so i'd only need to take time out if they are very ill. if you can show you've thought through the impact on your workplace of you having children kwim?

maybe look at applying for positions that fit around your DH too - so nightfill etc