Upload & Sell: On
I am thinking in my living room(8ft ceiling but large room) Pictures of grandkids and family
Umbrellas have a lot of spill, so in a small room you can get too much bounce light off all the surfaces. Keeping the lights close to the subject (so that the bounced light has a lot of fall-off in comparison) can help, as can using one umbrella for the fill light (for soft shadows) and just a reflector for the key light (for more definition).
As for the lights themselves, I haven't used Novatrons in years, but as I recall they were well built and reliable. Getting repairs and/or replacement parts may be a small issue, but for $100 it seems like a good way to start.
I'd also get or make some reflector panels, so you can practice with more lighting angles once you've gained skill with one-light and then two-light setups.
Since you're new at lighting, here are some resources that you may find helpful:
The first is a book by the late Monte Zucker, and goes into basic lighting strategies, facial analysis, and so on. I think it's a great primer on which you can build your own style.
The second two are videos about Profoto lights specifically (very high-end stuff), but apply in general to any lights.
Good luck, and have fun!