Transition Time..

Hi everyone. I've been reading a lot of posts here and thought I'd throw out a question. I have a 8ft foamie thats all buggered up around the tail and gets waterlogged. I've been advised that it's time for a fiber glass. I'm 155cm and 61kg female 42. I've been looking out for a second hand mini mal and saw this hybrid 6'9 x 20 x 2 1/2 for a pretty decent price. I've spent the last 6 months practising popping up on white water and VERY small inside green waves which is going well and I'm having lots of fun. Now I want to progress to practicing paddling onto green waves but I feel like I'm driving a big truck without power steering. The foamie gets really heavy due to the waterlogging. So would going down this much be a silly frustrating mistake?