My first thoughts are that you'd require at least two F-35 kits and one F-22A kit. I'm not sure about the engine mass flow requirements, F120 vs F135, but some playing with the F-35 inlets will likely be necessary to get them to properly work for two F120 engines. A host of US and export markings to put it in (export to Israel, Japan, Australia, S. Korea, et al. - perhaps even RAF).