Use what you have and after you have it wired up, turn off the wireless in the router.
Switches are almost fungible so about all I would should for is by the number of ports and avoid high priced models.
That said, why not wire what you want to have work all the time and use WiFi for what it's good at? Here I use the WiFi for my phone, tablet and laptops in range of my router.
I used a CNET article and reviews to pick my newer router. It's a TP-LINK AC1900 Wireless Wi-Fi Dual Band AC Router (Archer C9) which with it's current firmware runs for months without reboots. The home is 2 story, no basement and is well covered.
Its been more than a year, I have been trying various ways to get wifi signals in all corners of the house, and it hasn't been working. If I manage to get the signal, the speed is too low to use it. I even hired a local guy who fixes computer related issues in our neighborhood. He suggested using many repeaters. I trialed with one and it didn't work as good as I wanted.
Finally, I am ready to give up on wireless signal. Pls don't give me any more suggestions. I am too tired to even read them anymore. I will have local wireless signal where we have Chromecasts but thats it, otherwise we don't need any more wireless.
Now the question is, how do I go wired? I will need a wired router and a switch. Does anyone have a recommendation on a router that LACKS wireless and is for wired only. I checked Newegg, they have a few but as you can see I am not technie enough to figure out which one is best for my needs. I have 6 rooms that need to be wired. Household has 3 laptops and 2 gaming consoles. All smartphones and tablets have unlimited data. I am considering this switch but I need suggestions on a wired router.