RE: Please recommend a plane
ilektron,
to answer your question as to what you could be up to, every modeler at least thinks about the fact that any number of dangerous or illegal items could be carried by an RC plane. Explosives, chemical agents, guns, drugs, etc. With the current homeland security issues, the FAA is becoming more and more interested in the activities of aeromodeling. The hobby has done an outstanding job (imo) of policing itself to not even give the appearance of doing anything dangerous or illegal. So when a post pops up about carrying a payload we get nervous, and when the poster is secretive about his activites we get much more so. Add to that you say you don't know much about flying models and that really looks suspicious because the interest is obviously about carrying the payload, not building the model itself.
The truth is there are plenty of models that could carry an extra 2 pounds and could fly at that speed with it. But if you aren't going to be open about what you are up to, I'm not inclined to answer any of your questions and I hope others don't either.