Some quick probability questions

[2Fast2Furious]

I know pot odds aren't quite as important in No-limit as they are in limit (where they seem to be paramount - I'm playing mostly STTs and MTTs these days) but was wondering if I'm doing this math right....

1. Odds to hit gutshot straight after flop (4 "outs" - assuming you get 1 more card) - ~11.75-1 (so you need at least 10.75-1 pot odds to call)

2. Odds to hit open-ended straight after flop (8 "outs" - assuming you get 1 more card) - 5.87-1 (so you need at least 4.87-1 pot odds to call)

3. Odds to hit a flush with 4-flush on the flop (9 outs - 5.2-1 so need 4-1 pot odds)

4. Odds to hit a set on the flop with any 2 pair (2 outs - 23.5-1 - basically need it to check all around)

My math ok here? With combination math how would these read assuming you go all-in after flop and get to see full board (or are calling a bet and using implied odds to justify).

Thanks!!