I am unable to start my startup because of its scale
byoung2: "When accompanied by and development platform and strong contracts with major market players this can easily reach the scale of an iPad market and buzz"I would try to be more realistic about it.  Even Microsoft or Google sometimes have trouble building the type of buzz that Apple does.  A more practical approach would be to combine your three suggested approaches:1. Make a concept video of your product in daily use.  You can recruit film students in the visual effects department to help with that.
2. Use the video to recruit one or two cofounders and apply to YC.
3. Start working on a prototype of your hardware, software, service, etc. 
4. Sell it to Apple/Google/Microsoft and let them worry about creating buzz for it.