I don't use 4.0. I don't believe 4.0 is the same as 3.5 because it is being charged for.

This makes a big difference, much bigger than I can explain here.

You can always read more here if you are interested:

https://eric-bott.medium.com/the-energy-polarity-multiplier-framework-fb4215b55862

I'd say stick with 3.5, and if you find limitations, you should discuss with it how to get round the limitations, if you persevere with it, it will give you whatever is needed to give it the full capability you are looking for.

This is my experience with it.

You probably need to want it to work :)