Sorry about the setback..I know the feeling of getting jazzed about a purchase and then you have to pass because of obvious flaws.
I'm sure you'll chomp at the bit while waiting, especially now that you've had a run aboard a 232. They are cool rigs, eh?
However, you'll ultimately be happier with twins on that hull. (Didn't think I'd get to give you this speech..Yay! Here goes..)
150's will be fine, although I think the 200's are a better match. Pros & Con's below:
Pros-200's.
Higher cruising speed with similar fuel burn to the 150's. My numbers with my 200's are 30-32 MPH cruise at 3700-3900 RPM. Fuel burn is 1.9-2.1MPG depending on conditions. This is with bottom paint. Flat out is just South of 50MPH. (Won't quite get there..)
Cons-200's.
More weight aft; The scuppers are 3/4 submerged sitting in the water dockside. It doesn't matter. I've had the boat 10 years and it drains fine. I don't even think about it.
My 200's need the exhaust job done at 1100 hrs. Same disease as the 225's I'm told. My engines are 2006's.
Pros-150's
The 150's are probably a little more bulletproof and tried/true than the 200's, plus I haven't heard of any corrosion problems with them.
You'll likely find that combination more readily available for purchase than the 200's as they are more popular. Also, they'll likely resale better as they seem to be the "standard" for twins on a 232.
Cons-150's
You'll have to run them a bit harder to achieve the same speed as the 200's, although this is not really a negative. They will work a lot less than the single 250 you were considering.
Planing with several people will need a bit more throttle than the 200's although admittedly, I'm splitting hairs here.
Bottom LIne?
Both the 200's & the 150's will make you grin every time you plane off in a 232. I just like the 200's better, so that gives me a reason (in my own mind) to state that preference.
Keep us informed and stay warm as the wx closes in!