First Investment: How Much Should I Spend Remodeling/Improving?

[Al Enrique Canall]

Hi BP Community!

A month ago I closed my first Duplex in Jacksonville, FL. 

Total: $141,000

Cash: $27,000

But now, I'm very confused onto what to do next.   

I'm needing to make some minor fixes to the property, mostly cosmetic, and am being advised to fully rehab the bathrooms as these bring great perceived value to the property appraiser.  
Bathrooms are Ok, fully functional and spacious, but with an older 1990's look.

I bought at $50/sqft and with rehab and repairs costs it's going up to $60/sqft.  

I'm looking to refi at around $75-$80/sqft and have an 8% cash on cash return once the property is rented.

My question is:  should I also include bathrooms in the rehab? Do these actually make a big difference when appraising a property? 

Would love to learn from you!