iugr preemie babies

Alex • Blessed to be mom to our miracle IUGR baby boy! I've never met someone as strong and brave as he is!
They just diagnosed our son with iugr at my 24 week ultrasound. We are now faced with tons of options. He is currently 15 oz and has a single umbilical artery (2 vessel cord) and also a rough looking placenta (they aren't sure how well it is functioning). His vitals look great, said his heart looks great, kidneys are functioning well, and his breathing is 6/10 which is normal for most 24 week fetuses. Said he has a 50/50 shot right now in the nicu if he were born. I definitely want to wait until his chances are better. We have a level 3 nicu and a level 4 nicu is also close by.  Our hospital is ranked top in the area for delivery and for the nicu.  
Next things are amniocentesis to rule out viruses, and then possible bedrest in 2 weeks from now. 
Anyone experience anything like this and how well is your baby doing? This can't be the end of the world for our little one right?