If you're on such a tight budget that you can't afford 2 more reliable servos, then you might need to consider scratch building your planes from foam. Instead of buying another kit, consider a book (or other teaching material, maybe on youtube?) about how to use hot wire foam cutting. A friend of mine can build 10 planes just as quickly as he can build one, for 1/10th the cost of a kit plane. He just gets wingtip and wing root airfoil templates, sets up a jig, and slice slice slice cuts cheap foam into wing sets. Reinforce them with bits of hardwood, balsa, or carbon fiber if you want to get fancy, glue a $6 microservo in the wing for each aileron, and you're halfway there.
Come up with your own designs for planes, and fabricate them yourself. It's the only way to do it if you're really on that tight of a budget. Also, find a source for cheap small servos. My friend found a place that would sell him 20-packs for about $100, so he never worried about having to use bad servos. If one was suspect or got ruined in a crash, he didn't feel too bad about chucking it in the trash since it was only $5 for each one.
As for that predator model, friends of mine who fly real predators tell me that the plane flies like crap. Maybe the model is better, but the real thing was optimized for endurance and payload rather than handling characteristics. Stick to conventional non-scale aircraft and you'll probably have better results. If you want to get creative, start building your own designs out of foam. That way you can make whatever you want out of foam, and make a whole bunch of spare wings and stuff if you like the results.
