You should be fine with the strains you mentioned that are available in your area. For the most sedative or tranquilizer effect I would recommend medibles. Grow the weed then make some butter (sticky at this site) then use the butter to make cookies or anything that has butter in the recipe. They take effect in about 53 to 70 minutes.

I have chronic back pain which keeps me awake at night. I eat a cookie and sleep soundly for at least 4 hours. If I am still tossing after I wake and it is still the middle of the night I eat another. They wear off for me in about 3-4 hours but this varies greatly by individual.