The desktop computer in my coach (see signature for particulars) does not have a wifi board installed in it. I have obtained a Netgear AC1200 High Gain WiFi USB Adapter that I plan on installing in on...
I still would consider a laptop and a wireless printer. I use a wireless mouse and also a full size wireless keyboard (stroll thru your local Walmart to see them (or Costco). They are amazingly cheap. My keyboard (Logitech) is 100% solar powered. No batteries. You can use it for 3 MONTHS in total darkness when it has a full charge, without getting any additional charge from overhead lighting or window sunlight.