4/180 stealing blinds against aggressive BB

[lemming]

Haven't got the HH available, but here's the thing:

BB has been playing very aggressive, very often floating Postflop, donkbetting, or raising PF. I have seen him re-raising PF, defending his BB, against a signle raiser in LP.

Blinds: 600/1200 some antes

Relevant stack sizes:
Hero: 18'000
SB: 19'000
BB: 50'000
(note: Not 3 handed [img]/images/graemlins/smile.gif[/img])

Folds to hero who is on button
holding 7 [img]/images/graemlins/diamond.gif[/img]7 [img]/images/graemlins/spade.gif[/img]
Hero raises to 3'600.

Now here's the thing: I was planning to raise/shove to BB, as I finally picked a hand where I'm likely to have an edge over him.

SB calls 3'000.
BB raises to 15'000.

So BB indeed raises my steal attempt. As I planned, I shoved and got the money in against him. The only problem I did NOT think of: SB calling my raise. I don't think BB has been raising a lot PF against a raiser and a caller, I don't remember him doing it. Does this change my calling/shoving range here a lot? Usually he was raising the PF raiser to around 9k, if he made a standard raise like that. With a caller like that, he obviously needs to raise more. But do you think this tightens his raising range as well?

What are your thoughts about this?