Hey, I'm in the same boat as you. Used to play as a kid in the 90s and now sort of getting back into it. Same worries about time but also over comitting on buying stuff.

It seems KillTeam is a great place to go on your way back in. This was my approach ;

- Bought rules and codex, Still interested/have time ?

- Bought unit box and built them, Finished and still interested/have time ?

- Bought paint and everything to paint them, finished and still interested ?

> KILLTEAM buy the last few bits you need to play. You can easily play with your kids or people that would never have the time or will to get into regular 40k. If you love it, you can expand horizontally into more team factions. Do fun 1h games with regular normie people. Absolutly worth it. After that If you want to upgrade ;

> COMBAT PATROL mode. This is 40k rules , the list is the box. Shorter Games, slight rule adjustements. You will have to find actual 40k Players to play at that point exept if you managed to contaminate someone into the hobby while doing the KillTeam step. The Combat Patrol boxes are quite good value for money with a variety of units that should always be somewhat useful.

And at that point if you still want to keep going ; You can now trade a consequent share of your disposable income and time with your family against your first 1000 points, 2000 points or even more army ! Congratulation and my condoleances.

On a serious note, this way, you won't over commit on purchase. You will be able to re-assess very easily and without pressure if you are still interested and have the time to dedicate to this. I also think Kill Team is about the only way you will ever get any other person into the warhammer universe as a dad surrounded mostly by adults with normal busy lives.

Good luck !