Playing one single finesse has only a 50% chance of success.
But playing two single finesses has a 75% chance of winning at least one of them.
Declarer must therefore attempt the finesses both in ♦ and in ♣ and not be discouraged when the first finesse fails !

The trump lead (A♠ followed by North's 5♠) is by far the most demanding for the Declarer, for he will no longer be able to ruff his 3rd ♥ card in Dummy. For as soon as South gains the lead with his A♥ he will lead his remaining 9♠ removing all Dummy's trumps.
An Opening lead in any of the other three suits would make life a lot easier for Declarer.