Ideally having a 3rd... vehicle would be ideal (I know not financially logical).
Personally, for a household of 2 people + kids I think it's foolish to have any less than 3 vehicles. Obviously you both have jobs, so what happens when a vehicle goes down for reason X? What if that's long term? If you have two vehicles, and one is down, now you both have one vehicle to split, and hope it doesn't get taken out too. Having a spare, sometimes vehicle will provide that insurance. Also, any vehicle used off-road should be considered a toy, and not used as daily transport.
To the financial aspect, that is up to you and how you want to build your hand. You really need to decide how much money you want to tie up in liabilities, and what problems they are to solve. The best thing for you to do is to throw away your hopes and dreams, and use math on paper to figure this out. Being self-employed has trained me to look at things like daily drivers as appliances with operational cost. I know my
