Yes, I count the final EC. My water is over 1.0 which doesn't leave much room for nutrients. So, I use reverse osmosis water which is about 0.1. I add 2ml calmag (a little more in flower) by default just to bring the water up to what would have been an acceptable EC like yours, replacing the minerals that should have been present in the water. (Some people say I should be able to mix RO water with my tap water. I haven't tried that yet.). Then a ~1/2 tsp of fertilizer which brings it up to about 0.8-1.1.
As long as you're in that range I wouldn't worry much. If you don't get nute burn or deficiency which are both fairly immediate, then you'll want to watch for salt buildup as I described which is a slow process and won't be seen until your plant starts having deficiencies later in the grow. Tracking runoff ec and ph will be invaluable if a problem arises later.
Be sure not to water too frequently. Let the soil dry before watering. The soil's ph rises as it dries, if you keep it too moist you can cause something like salt buildup (nute lockout) because the ph range the plant experiences is held too low.
Because you're growing in soil, I suggest you read "Teaming with Microbes" (
http://ge.tt/9LYCbnC/v/1). You don't need to do anything other than feed the plant using the fertilizer you have, but eventually you'll want to feed the soil biology. I add Botanicare Liquid Karma, usually 1/4 tsp molasses, 1/2-1 tsp fish emulsion, rhizo blast in veg. If you read the book you'll be prepared to supplement with organics. But, I'd keep it simple for now.
One thing you probably want to add in veg is a silica product like Botanicare Silica Blast. Silica makes the plants tougher, resistant to heat, cold, drought, pests.
