The only problem with the F16 is that it will cost about $40,000 when people start building it to the rule.
A bit less. I've been exploring it, and it'd be about $35k to get a Viper-like design, (big volume+stiff), to weight. Cheaper if you can order more than one.
But there is always the possibility of it reaching that $40k number. Gotta pay to play.