Play in 4H?

After a miserable first session, the second session of the LM pairs for my dad and I started out okay and when Grue went down in this 4H contract against us on the 4th round, I got a little optimistic, but then things really fell apart. I was glad to see Grue misplay one, although on a closer look, it's not as clear-cut as I thought at the time.

Dealer: N Vul: EW	North ♠ AQ64 ♥ KT ♦ AJ52 ♣ K53
West ♠ JT2 ♥ A7642 ♦ 986 ♣ 74		East ♠ 98753 ♥ ♦ QT7 ♣ AQJT9
	South ♠ K ♥ QJ9853 ♦ K43 ♣ 862

West	North	East	South
—	1NT	X	4♦
Pass	4♥	Pass	Pass
Pass

Double showed a 1 suited hand (clubs). My dad led a diamond which Grue won with the 10 and with almost no thought played the king of hearts. I won and led a club through to get my ruff for -1. Clearly the contract could have been made by cashing two spades to pitch a club from dummy or even make an overtrick by cashing the SK and coming back to hand with a diamond to pitch 2 clubs on the AQ. At the time I though this was a pretty obvious play but it's not really. The diamond lead, which looks like it's probably from shortness so getting trumps in asap may be the way to go, basically playing for either east to have the heart ace or west to have the club ace, not unreasonable at all. Fooling around trying to use a diamond entry to get to cash 3 spades is too dangerous, and cashing the AQ of spades, squandering a potential spade trick, could cost an overtrick. On the other hand, if the diamond lead was from the Q, the defense has already given you a slight advantage over the field so playing safer to make 4 may be right. So, I still think the right play is the play the AQ of spades, pitching a club from dummy at tricks 2 and 3, so you can ruff the 3rd club high later, but I'm not so sure any more.

We got 47 out of 64 matchpoints as weak notrumpers might wrongside the contract and go down immediately on a club lead from my hand.