Gel coat appears to be in decent shape. Trailer could use some love, but other than that, really cant tell what else it might need. To be ready in April, I would suggest getting it inside somewhere warm for a few days, and spending some time investigating the likely suspects, floor, stringers, transom. Spider cracks in the gel coat can sometimes be indicators of flexing caused by weakened structures. Basic checks on the engine and outdrive can be made, but making full running type tests might be a problem, since you would have to go back and perform all the winterizing tasks again if cold storage was in its future. Depending on your time and resources, being on the water in April if full floor, stringer, and transom replacement is warranted is a bit optimistic. A few soft spots isn't horrible, enjoy it this season while collecting the components for a rebuild, then do all the tear out in the fall, rebuild over winter if garage availability exists. Take some time and review some of the threads on here, plenty of info related to floors, stringers, and transoms.