I'm probably the wrong person to post, but wth...
Firstly OP - you're a newbie and it can take some time to get your posting style "right".
Humour is fine, but MN generally (unlike rival NM) doesn't in general have much truck with cutie pie language.
Best to keep it straight and to the point until you find your feet.
As for cars...
Well as I mentioned I'm probably not the best person to ask...
I like cars and frankly tend to fit my lifestyle around them rather than the other way around.
We had a 2 seater convertible sports car that I generally used with a small boot when DS was born and it was great. I just bought a small buggy to fit the boot.
That said DH and I had a bigger more practical car (BMW M4 as it's known now -was called an M3 coupe at the time) that had a decent boot, but not huge and was two doors.
It was fine even when we were travelling with DS and DSD.
Tbh unless you've got 3 children and/or it's your only car I really don't understand the need to have a "big" vehicle.
If the car is simply for you on a day to day basis then something like a Toyota Aygo (which you can get with 5 doors) is fine. It's small and economical, good safety ratings etc.
Just don't buy the biggest pushchair in the world!!!
That all said, if you are a nervous driver then maybe think about doing a "pass plus" course.