I've made that basic recipe before, it's a very bright in both color and flavor and lovely jam. Adding strawberries to it would just make it much more yum!
Unfortunately for me, my son and DDiL are vegan so no using gelatin in things like that any more, it takes the place of the pectin. But here's a handy page on replacing gelatin with pectin.
https://www.livestrong.com/article/5...n-with-pectin/