WiFi will only be an issue if you are having wireless issues with your current setup. If your wireless unit is provided by your ISP (and you have had the same one for several years) or you own it and have had it for several years, then you might be experiencing wireless issues. This is more noticeable when your newer wireless AC devices (newest iPhone/iPads, Android and computers support this) “confuse” older wireless G/N access points/wireless routers.
If you own your own and you have “dead spots” or connectivity issues, consider updating to devices that allow you to elevate/re-position the access point and/or create a mesh (one access point is connected to the firewall/router and the additional access points are placed to help boost the signal but don’t need connect directly because they communicate to the connected access point).
I like the Ubiquity series of access points:
https://www.amazon.com/dp/B015PR20GY
They can now be configured with an app on the iPhone/iPad or Android devices. You can add additional ones as needed and their size is about that of smoke detectors.
The GF 
will be able to have an 8 to 10 foot dryer vent hose attached without needing a fan assist. I think it was @dan who made that clarification. If possible, just add an external dryer vent to the room where you plan to have the setup. NOTE: avoid placing it directly under a window to minimize drawing the fumes back into the house. Also, keeping it lower than the GF will keep condensation from flowing towards the equipment and even a vent stop (see @marmak3261 Prototype Quick Disconnect Magnetic Vent Hose Coupler - #36 by Sawa ) will be helpful.
Grounded outlets with a quality surge suppressor (those that give you a $25,000+ product protection guarantee - $25 to $40 price tag). If the house either has only two-prong outlets or a mixture of 2 and 3 prong outlets, get something like this to test if the ground is wired properly (without putting yourself at risk):
https://www.amazon.com/dp/B002LZTKIA
If there are not 3 prong outlets or the tester shows error, you might need to have an electrician resolve the grounding needs.
UPS (battery back) has been discussed here. The battery backup is only to get past power “hiccups” not to keep your equipment running for dozens of minutes/hours. Now if your power flakes out regularly/irregularly, make sure your computer, wireless unit, modem/firewall/router are also on a battery backup.