This is why I stepped up to the 212CC Wen (Chonda clone) instead of the suitcase type. The suitcase looked pretty crammed in / complicated. The 212cc ones I can get to everything on and its wide open. WEN support was pretty good. I bought a spare coil, igniter coil, rewind starter, a full carb with the servo motor and some other odds and ends - just to have around. All those parts were like $100. Murphy's law dictates I will now never need them, which is fine with me.Another vote for a non-inverter generator.
The fridge and wifi will take "dirty" power. Fridge is a motor, wifi will have a 100-240v switching power supply that can handle "anything." A non-inverter generator by default makes a perfect sine wave, only dirtied by "brush noise". An inverter by definition makes a "pixelated" sine wave; the question is just how small are the "pixels"? They output a digital drawing of a natural mathematical phenomenon. Even if an inverter at steady state makes a pretty waveform, hit its output hard with a motor starting up and you'll get a bad voltage sag that hits everything else that's already running.
Running a standard generator at 50-60% of load will use the same fuel as an inverter generator. Only significant savings is at very very light loads.
I have a little baby inverter generator, the carb on it is so finicky and so small, it gums up if you look at it wrong. Ever seen a jet engine with the cowl off? That's what it looks like under the plastic beauty covers of my generator with little tubes going everywhere. IDK if you're going to find parts for this brand you speak of either. (Champion is a good brand, however.)
I would get a conventional generator, 30 amp battery charger, 12V inverter, and a 100 amp-hour Lifepo4 storage battery. You can run your wifi all night off the battery, and, honestly, the fridge as well if it's already cold. Run the generator during the day for the AC and charge the battery. LifePO4 are way better than lead acid-- they deep cycle without drama, last ten years in storage, and charge quickly too. Very popular with the solar crowd.
I would have been happier to go with a standard generator vs inverter but they don't seem to make them in smaller sizes.
Everything I read said to buy a Champion / Wen / predator if your not going Honda / Yamaha. The other off brands don't have any support.