I'm considering buying a Cessna 182 S on Wipline 3000 amphibious floats. The performance seems fairly anemic and I'm looking for suggestions. The airplane has an STC to raise the gross weight to 3250. Although Air Plains has an STC to increase horsepower to 260, the cost is high and the current engine is only half way to TBO. So, I'm wondering if a Sportsman STOL, Wing X extensions and/or a Hartzell Trail Blazer prop would be a cost effective way to significantly improve takeoff and climb? Another benefit of the Trail Blazer prop would be a reduction in weight on the nose which should help the forward CG problem. Any thoughts, ideas or suggestions would be much appreciated.