Hello everyone.

I posted a thread in off-topic about stopping the current project and starting another but with a far better Datsun.
Here is the situation.
Im studying at uniSA, in my final year now. I have a fantastic fiance and a fantastic 2yr old son. I purchased a very run down datsun 4dr and did alot of work to it, but I am running out of time to get it on the road as it was purchased to alleviate the single vehicle-small family problem. We are currently driving a Hyundai (don't laugh!) hatchback and it is seeing the end of its days.
My fiance and I both work in hospitality and our shifts often clash leading to a chaotic rush around sorting out baby-sitters and whoever needs to start work first. We desperately need another vehicle to help out with transport. I have enough money to purchase maybe a cheap 4dr or ANOTHER DATSUN!!
Being an international student my visa workhours are limited to just 20hrs a week During university so I need to decide now whilst I have the money.
So here we go guys, do I purchase a safer 4dr vehicle and completely halt any datsun interests using the hyundai for me. Or do I purchase a Datsun and keep the hyundai as the main family car??

I'm thinking about getting the datsun (of course) and perhaps trading the Hyundai in (with some cash from a Dad-loan) for a bigger 4dr.
Im after Topgears' 1000 and I haven't yet heard from him about buying the beautiful coupe.
Im 21 and have a definite passion for the beloved Datsun, the missus not so much but she is okay if I do get the new Datsun.
To everyone out there your advice would be greatly appreciated. Sorry for so much writing.