A double fit

Playing in a club game, I pick up a good 5-5 hand (hands rotated to make me South):

Dealer: S Vul: NS	North ♠ xxx ♥ xxx ♦ AQ9 ♣ Qxxx
West ♠ ♥QJxx ♦xxx ♣AJxxx		East ♠QJ9x ♥xxxx ♦KJ ♣Kxx
	Me ♠ AK10xx ♥ AK ♦ 10xxxx ♣ 6
Bidding:	1S 2S 2NT* 3D* 4S lead of Q♥	HTML Bridge Hand Layout Creator

Partner responds 2S to my opening 1S, showing 6-10 points and 3-4 spades.  My 2NT asks him which suit he'd accept a game try in, and learn that he'd be happy to accept a game try in diamonds.  I bid the spade game, and get the lead of the Queen of hearts.

What are your initial thoughts?

I felt that we were in a good spot, but it does not look like a spot that many people in this club game are going to be in.  I had to make the contract.

I won the heart lead and laid down the Ace of spades. East showed out.  Now what?

Obviously, I need to use the diamond entries to take spade finesses, but also retain trump control.  How though?  What's better? A diamond to the Queen, to the 9 or running the 10?

Running the 10 seems best because the two diamond honors are likely to be split.  Leading to the 9 seems to have the advantage of creating two entries.  But if I lose to a singleton honor with East, he'll find a club switch and get a diamond ruff.  If diamonds are 3-2, I may not have the luxury of 2 entries anyway. What's the right way to play this combination?

I played a diamond to the Queen, which lost to the King.  Two rounds of clubs.  Now, a second diamond to the 9, which lost to the Jack.  With only entry to dummy, I had to also lose a spade.

East turned out to have KJ tight.  Should I have gotten this right?