Just look up the brand and model number of the crib and bassinet to make sure they have not been recalled. Even if they have, it is still possible the company would send you replacement bolts or other parts to make it 100% safe. Many, many babies have lived their first years of life in a used crib. Maybe get a brand new mattress. You would not need the baby to use the bassinet for longer. You can make room in your room for a crib.
Or are you saying your friend has a bassinet but not a crib and you don't know if you'll be able to afford a crib 3 months after the baby is born?
I know they freak out about the spacing in the slats and everything, but I still would not get overly concerned. Safety is paramount, but there is an entire generation of us who lived with slats too far apart on our cribs, sipping the foam off our dad's beer, riding in the front seat unbuckled with a metal dashboard inches from our foreheads, eating Slo Poke candy on a stick and popsicles and watermelon rind, and we're still alive.
What your baby will need most is your love and devotion, not your uptightness and if other people try to be uptight with you, as long as you're taking care of your child, tell them to f*ck off.
Raised three kids and while I used to be *that* uptight mommy, I got over it.