The picture shows wire over wood with bedding over part of it? That will be REALLY hard to clean. Poo and food will wedge itself between the wire and wood. Better if you have time to install linoleum on the floor. Then use paper towels as bedding for their first week, switching to pine bedding after that. If you keep the papertowels or switch to newspaper, you just roll it up, bedding and all, wipe it down, add fresh, and cleaning is done.
You need a lot more ventilation.
The sides near the lamp look to be wire with the white covering? I'd cut the top 2 inches off the white covering to expose the wire and allow more air in. Cutting more each week to reduce the temperature as they grow. Next batch of chicks, maybe use double sided tape and towels, the tape set at intervals, so you can drop the towel instead of removing pieces. I use towels a lot, they really insulate well. I've used all wire hutch style brooders before, covering the whole thing in towels. When the temp needs lowered, I start removing towels in stages. Have a whole stack of "chicken towels" now, courtesy of Goodwill and using old ones we had around.
Turn it on, and put a thermometer below the lamp. See where it's at in 3 days. You won't know how the heat will build up in a matter of hours. Leave it run for days to really see what it will do. Adjust the ventilation accordingly.
On the wooden side, it wouldn't be a bad idea to have a thermometer over there too, to see if heat gets trapped over there. It might need a strip of ventilation across the top Left side. Easy to drill holes as well, a grouping of vent holes made with a drill in the center.
It's healthier for the chicks to have good air but slightly lower temp, they'll hang out directly below the light. Having the temp just right but stagnant air would be more detrimental to their respiratory health.
I usually put a stuffed toy just to the side of the heat circle below the lamp, something they can hide under, stand on, something to keep them from feeling exposed in the middle like that. They seem to play more when I do that. I remove it at about 3 weeks and throw it in the washing machine. Seems to help roosting later, having something early to jump on. They seem to like having something to huddle against, which is lacking in the center of a brooder where the most heat is.