Going with more than one strain for a first grow is totally up to you. Even when you are doing a grow with just one strain, every plant is different and requires close attention to its needs. In other words, you'll have to watch each plant ANYWAY, so why not watch several strains? On the other side of the argument is the fact that a first grow is always a learning experience and you WILL make mistakes. Making newbie mistakes with an expensive strain might make you cry. LOL
Your product list is WAY more than you'll need for a soil grow. I'm a long time grower and my list is about 1/4 that long for every grow. Just sayin.
Soil growers only NEED:
seeds (or clones)
starter medium (like an organic starter soil or peat pellets)
good soil (never use miracle grow or the like)
cups for seedlings, then 2 incrementally larger size containers for re-potting
de-chlorinated water
proper lighting
vegetative feed
bloom feed
fan
It's nice to have:
pH tester
thermometer
exhaust system for larger home-grows (4 or more plants)
magnifying glass
I think that covers it, but I'm short on time today and not thinking too deeply .... LOL