Cheers back atcha,

It is my understanding that the THC concentration is less important than the CBD concentration.
That's why Indica strains are recommended.

Been reading a bit and have made some oil from Jack Herer, Gainesville Green and from several Sativa dominate mixes.
The high THC seems to be the limiter on dosage for most people.
They get too high for comfort.

High CBD strains temper the "up-ness" of the THC, and are medically more active for Cancer control.
(Do not quote me on this ,it's just my understanding of what I've read and tried.)

My personal experience is really quite limited.
But, have just germinated some "Herijuana" and some "K.O. Kush" for their thc:cbd:cbn ratios.
Also plan to try some "Anesthesia" and "Jackberry Kush".

Give me a few months and I'll have better information for you.

As for easy to grow indoors?
I found White Widow to be very easy to grow indoors and the end product is quite impressive.

Is the oil medically effective?

I'm currently watching an experiment with an MS patient, and waiting on some test results from a prostate cancer patient.

The remission in the MS patient is stunning!
And I should have some numbers on the cancer patient by the middle of April, but initial results are encouraging.

Please keep us posted on your progress.
Aloha brah,

Wee 'zard