I am 33 and have a 4 year old son who will be starting school this September. The biggest benefit for me that any company could offer would be true flexibility

I am 33 and have a 4 year old son who will be starting school this September. The biggest benefit for me that any company could offer would be true flexibility with regards to my working hours and location. I have been self-employed for the past ~7 years and it has been great as I have been able to balance work with the first few years of my sons life. Time I will never get back so being able to be there every day has been wonderful. But now I need some consistency so will be looking to find a normal job very soon. I don't care about free coffee/sofa, gym memberships, sports tickets, etc. I just want flexibility so when my son has some school event I can go without having to use up a whole days holiday for a 45 minute show, etc. I am not looking forward to it though. I know I am going to find it hard to adjust!