I will give it a shot...
- How do you talk to young kids at this age about FIRE? It appears your kids will be 9 & 10/14 & 15 when you and your wife retire respectively so while the kids are still younger, I am not sure it really takes a specific conversation to keep them from being confused. I'm old school, so we had our kids baby sit/odds and ends type jobs when they were 14/15, get starter jobs when they were 16 thru college to cover some spending $$ as well as learn about $$.
- How do you raise them to be mindful of spending and saving? See above. Give them some responsibility/accountability with both earning/saving/spending $.
- What to say when the inevitable questions comes...how come you don't work when other parents workHonestly, you will most likely be filling your days somehow and managing your portfolio so perhaps you can tell them you are an Investment Manager
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Ok, don't take this the wrong way as I don't want to rain on your parade here, but coming from real experience, I think it is VERY risky to go cold turkey RE until kids are at least in or out of college.
I plan on launching end of 2019 when I am 55. I have 4 kids and my youngest graduates from college next year so my heavy lifting will be complete. Let me tell you what kids cost from age 4 and up (in my case X 4)... kid sports & travel, braces, cars/insurance/accidents, private school (sometimes a situation warrants it even if it wasn't in the plans), "unfortunate situations" that may require legal help
, college/fraternities/sororities/study abroad, weddings (2 of my 4 married). Perhaps you have all of this accounted for? Don't get me wrong, I read about others on this site who have done it, but for me, particularly as the only income provider for the last 28 yrs, it would have been very difficult to plan for these costs at age 4/5. There were many things I "planned for" regarding kid's expenses in the early years and things I said I would/would not do, but life has away of playing out differently most of the time. Eg. I swore I would have only 1 or 2 extra cars when my kids were driving. Guess what, I had 6 cars in my driveway
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No wrong/right answer... good luck!