I think it is premature to say the F-35 "has less than average maneuvering ability". The average of what? The only match-up we have any info on is against the F-16, which is the race car of fighters. The F-16 out turns the MiG-29, SU-27, Mirage 2000, F/A-18, F-15 and is a match for the F-22 even with its thrust vectoring. The only jets I can think of that might match a Viper in a pure close-in dogfight is the European double-deltas; the Rafale, Typhoon and Gripen.
The current generation of the AMRAAM has the same reported range as the old AIM-54 Phoenix.
The cost of the F-35 is not insane at around $100 million per unit. An F/A-18E costs $60 million and has been in production for a long time. The current cost estimate for the F-35 is that by 2018 the unit flyaway cost has come down to $85 million.
A Eurofighter Typhoon will set you back $90 million. A Rafale costs $101 million. A new F-16 will cost you anywhere from $70 million to more than $100 million depending on what options you want.