Prototyping in flash?

I know most people hate 100% flash-based websites, but I was recently forced to use flash for a college assignment. After creating a fully-featured ria in less than 2 weeks with every feature I could imagine, i've regrettably fallen in love with this beast (which I previously refused to touch with a stick) due to the power of AS3 and the ability to sprinkle it everywhere :-\

I now want to port a commercial desktop application of mine (which has been largely unsuccesful) to the web and feel flash/flex is an excellent candidate. While creating a html/css/js version would be ideal (working browser shortcuts, for a start), i'm certain it'll take a year to create in cross-browser html/css/js what would take just ~3 months in flash. Obviously as the (paid) desktop product was unsuccessful, i'd want to minimize the risk/investment in the (free) web application.

I plan on using JSON for we开发者_Go百科b services, so it shouldn't be a huge pita to port in the future.

Is this a good strategy for launching a web app you're not yet 100% committed to? Or will the fact i'm using flash doom me from the start? Has anybody else done this? If so, how did your userbase respond to the 100% usage of flash, and did you get around to porting it to standard web technologies?

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Flex/Flash Builder can be a good option but the mobile device limitations are enough to use something else. I agree with Trevor that html and javascript are the way to go. Specifically you should use a js framework like jquery because it has jquery UI and mobile out of the box including most ui features Flex was pioneering a few years ago. using the jquery ajax call you can easily use jsonp.