3/5 tuplet

Is there a possibility to write a 3/5 tuplet in a 5/8 measure? My understanding is that one has to select a note of the total duration in order to divide it by the number of wanted notes, but I can't find a way to select a duration of 5 eights. It is of course the duration of a full rest in 5/8, but selecting a rest doesn't seem possible.

The "mathematical solution is obvious: using 5 triplets of 3 16th and tie them in three groups of 5. But the result is unreadable:

I tried to make the measure invisible, and added a non-playable triplet, resulting into:

Is ther a way to make it look better (reducing the space after the triplet, due to a non-visible eight rest? Or is there a better way to achieve the same result (an audio file must be produced)?