Welcome to the Wyze Community @JJAYMZ!
Yes you are correct about needing AC power to each device. If you are actually 100 ft from an AC source that could be tough.There are after market cables galore available on Amazon that can be strung together but I believe a 100 ft run would have too much voltage drop to be reliable, if it even works at all.
Also,just for full disclosure these are not sold as 'outdoor cameras ’ and use that way will void warranty. That being said check our friend Mr. Amazon for outdoor enclosures.
There is an outdoor cam in the works but no release date yet. Don’t know yet but it might be battery powered. I use a 20000 ma solar battery pack to power mine when needed but it’s run time is limited - about 10-12 hours depending.
Phone Solar Charger,Yelomin 20000mAh Portable Outdoor Waterproof Mobile Power https://www.amazon.com/dp/B07NQ5H9LR/ref=cm_sw_r_cp_tai_-RlKDbJ09V6CQ
There are many options for this type of thing but remote battery might be your best bet. Again, Amazon.
The cameras all work under the same app. They can be grouped together and viewed or viewed individually. They can trigger or be triggered by other devices,both Wyze and other products. The search feature on this forum will lead you to lots of help from friendly folks with the same questions (and answers).
Feel free to post back with any questions,.you have an interesting and challenging but very fun road ahead!