No right answer here. At the end of the day it will be your property and you may do as you wish.
I would take ownership and assess each tenant and their ability to pay and how they conduct themselves the first 4-6 months. Then figure out who I want to move on and raise them 20% or so. The rest after 6 months I would raise 5-10% depending on the situation.
I had a similar situation a year ago I purchased. The minimum had been done the last 30 years A solid C to C- in a B+ Location. I left everyone alone at current rents, even asked a few that were going to leave to stay. I said I was not changing anything but making repairs they needed. I essentially broke even in the last 15 months.
A few asked me to always wait until after the third to deposit checks due to Social Security clearing. No problem I told them. Some of the most stress-free tenants ever, luckliy.
Now fast forward a little over a year and the first two are moving out. I made some minor common improvements and prepped for more this year. The units when they are rerented this summer will be refreshed and will net me about 60% more per unit making this a great investment both in cash flow and value appreciation.
I am now entering year 25ish in investing starting with a duplex I lived in 1/2 of. All of my units are slightly below market, well maintained, and when I acquire new ones I typically gut renovate them. My turnover is less than 2% a year across my portfolio and all of my tenants are current during COVID but for a house, I acquired in October (I knew they were bad) that have not paid 1$ since. I am sure many people here make better returns than me overall but my portfolio is really stress-free. No 1 way to be an investor, but I always suggest a long-term view unless you are flipping (which I do not do as I learned the hard way I am not good at it). Good luck!