if u have the injectors you dont really need the vortech fmu, those are usually used for stock injector setups. go with what mark said and pick up a $150 aeromotive rrfpr and a minigauge and that will defnately help, esp when getting it tuned. maybe even pick up an s-afc.

as far as the 3s swap depending what year your camry is you might have alot of work cut out for you. and the stroker kit isnt as simple as bolting in a 5s crank in a 3s block. the rods have to be custom length and etc etc. 5s-fe block with 3s-gte head wouldnt be cheap either, i dont remember teh specifics of this.