I don´t like to bid a 65411 hand with a bid that shows something around 4432.
So, I don`t like the double, but I can sse the downsides in all other approaches too.
Now I bid 4 Heart.
Pd needs something like AKx, Axxx,Axxx,xx to make slam good. Okay, he may have x, Axxx, Axxx,Axxx, but I don´t believe in this hand.
So I won´t try for slam and give them more room for preemption, I just bid game.
And of course the hand is more worth then just an invitation because of the 6-4 fit, two singles and pds opening. Quite hard (but possible) to construct hands where game has no play. (KQJx, Qxxx,KQJx,x is one

)
1♦ - (2♣) - X - (P)
2♥ - (p) - ?