If all you have is one battery, then more batteries are a must (especially before autumn)!
The Fly-More kit is the best way to buy them, as you get the charger, carrying case, and spare props essentially for free.
As I mentioned above, plus batteries are nice but standard batteries give you more flexibility in where you can fly. I have three standard batteries and four plus batteries (was supposed to be the other way round, but supply issues when I got my Fly-More kit combined with a looming trip meant my planned kit with standard batteries became a kit with plus batteries).
I frequently use all three standard batteries on a walk/trip, but have never used more than a couple of plus batteries. This is partly because I live in the GTA within controlled airspace, so am almost always flying somewhere where I must remain under 250 g. Checking the NRC map, that's of less concern for you as only the hospital helipad forbids operations; all the nearby aerodromes are legal to fly near. You
would need to keep 30 m horizontal separation between your drone and people, which I suspect is way easier in Huntsville than down here!
The downside (for you) is that you would have to register your drone (easy, $5) and pass the exam for a basic sRPAS certificate (harder, $10). Open book timed exam, unlimited retakes allowed (as long as you pay). There are courses, but I just studied on my own and did OK. Don Joyce has the best tutorial video I've found: