a top wing trainer is just that a trainer. A trainer helps you by being very stable and will slowly right itself within reason while you are trying to make movements which you have to concously think about an automatic response. Low wing aircraft like the p51 will let you get them very easily into bad orientations and they will stay there until you purposely fly them out of it and they are very fast to respond. They are easy to over control and get way ahead of you due to there greater speed. Even the p51 by hangar 9 that is stated as a trainer is not very helpful as a trainer unless you ant it to train you for low wings after you graduate from high wing trainers or had many many hours on a sim. Stick with an arf for the project it will look better and fly better then a kit will if you have no one to ask for help on your first build. there are a lot of skills to master in building and the first attempt does not always look great especially the covering stage until you have done a few and you would not want something that you were not proud of showing for a final grade. An arf has the major components built and covered like the wing and fuselage. Your job of final assembly consists of glueing together the wing halfs and attaching the rudder and tail feathers to the fuselage. Then you must properly mount and engine attach the fuel system. mount and install the receiver batteries and servos. make and connected all linkages to servo and control horns. check for proper directional and travel throws. make sure that all surfaces that you have attached are square and alinged properly with the aircraft. hinging of ailerons and rudder and elevator are also necessary.