RE: EDF F-4 Phantom
The E-turbax from jethangar.com is the most bang for your buck and fits the YA internal ducting for DF jets fine.
Their 120 mm fan, Neu 1527 1.5Y motor with a CC110 HV ESC will set you back $695. and it
can be assembled ready to run in an hour or two.
The F-4 would be even better on a pair of 90mm midi fans with new internal ducting.