What about crossing to dummy with a club to take the double heart finesse. If it loses we win the diamond switch, cash AK of hearts, and if they dont drop, cash all the clubs and exit with a diamond. If nothing else works we have the chance of diamonds ...
It is a matter of style. What is your plan when our opponents bid to a game or slam and play double dummy? Or when you go for a number after trump leads at first opportunity?
I think that trying to be scientific in this kind of hands doesn't pay. Psyches don't work either, at least against good opponents.
The problem with 4 Hearts is that opponents will certainly bid more, and there is not enough information exhanged with partner in order to judge ...