Ayansinha wrote:

So what do you suggest to buy at once?
I'm form India and it takes much time to get my order in my hand. So I want to purchase all necessary accessory with subbox mini mod that I don't need to purchase for months.
I vape around 50-70 puff a day

I suggest you buy enough coils to change at least once a week for two months and an extra or two. Better to have too many than not enough.

Go with SIMPLE kit. Anything will be better than your vape pen so go with a good suggestion that is easy for you to use, cheap to maintain and within your budget.