We had an 03, with a 6.2 B3, and she would struggle to get on plane with 5 adults, full tanks and gear, had to ask everyone to move forward with full tabs... I would think you would not be happy with 5/B2 unless it is just you and another with light load. Remember resale too... word gets out, and it's hard to sell...had a Rinker 250 we purchased underpowered and took a bath on it. In my experience, Hp is nothing and Torque is everything, at 26 you're just crossig that big block line IMO.
Good luck, there are plenty of great boats in that size/range, I'd hold out for one that fits the bill, even if you can steal it, and do not just limit yourself to SR.
good luck, always exciting looking for the next boat....