In my experience wich is more technical than artistical ther are several way of lighting depending on the budget and the rental possibilities. I work in italy like gaffer and the rental prices are very good.
triple-wick candles and others stuff like that are good like in frame light handled by actors and also on the extraframe, i've done for a work in a cave 2 round plates 1 feet diameter with 8/10 large candles, like the church one, with soft and hard lee reflector only in half of the circonference.
Anyway i will try to rent a very small generator like 1.5kw that can be transported by hand, using little fresnels like 300/500 or photoflood that are cheaper, they can save your life and also can emulate fire with dimmer or moving little flags or blackfoil shadowing the objects. In italy one day with this material i pay 100/150 Euros
If you are very very fast you can use a little hmi like Arri sungun 125 with dc battery ballast and 24V block battery pack but its about 25 minutes for battery
I will figth for the little generator!
If all of this sound crazy you need a lot of candles triple or the church big ones and a lot of white bounces, also stripes of hard and soft gel reflector rosco R4 or Lee
At your iso you need 30fc to be on 2.0, like a 300 fresnel 12 feet or 650w 20 feet away More or less
Pushing on super 8 i'ts a lot of grain but could be an artistic idea.
I'm sorry but i'm thinking and writing in english so i don't know if you understand me =)