Hard part was support. Due to my clients being from around the world, sometimes they need help with items and expect a certain level of service, such and responses to support questions with in 24 hours or sometimes sooner. This required me to 90% of the time forward the inquiry to the a upstream vendor and that took time to collateral the right data to vendor (from the client's inquiry).

I did end up hiring a support personal for help to give me some breathing room on the weekends.