Hi Irving, is it worth it.
I would say yes it is.
However, not for the 8700t, unless you have power limitations, but for the couple of bucks more I would go for the 8700k certainly if you are playing games like Battelfield, CoD where the CPU is much more under load as in games like LoL or Rocket League.
You will have HT enabled which is a big change in overall performance of your computer, as many more tasks can get handled at the same time.
In any case it is worth moving to i7 if you are gaming and using it as a workstation.