I think the strategy that you have laid out is a perfect first step. The next step is starting to execute this plan. I am kind of in the same boat family, kids, house, mortgage, student loans etc. I have ambitions of growing my blog into more avenues but the bills wont stop. Just get some buy in from the family, share your dreams with them and have the understanding that your free time will be reduced as you work towards something greater and that will ultimately make you happy.
~DB
danbukowski.net