I have a business plan & money to hire a developer - the essentials involve simple online games for children (played via traditional computer over the internet) such that their scores are uploaded to a database that can be viewed via a nice portal. What I don't know is:

• what technologies I would want my developer to know (the only somewhat unusual requirement I have is that the games have relatively accurate timing of keypresses/mouse presses)

• how much I should expect to pay (in general, what is the appropriate range)

• how many hours a program of the complexity of a simple tower defense -type game should take to develop (to be clear, the idea is not to implement TD, but rather other games of similar complexity)

• whether I should go with capable acquaintances, some online kind of online web-dev bidding site, or just try to find a capable undergraduate at the local university who I can wow with his/her first big paycheck,

• how I should communicate the software's specifications to my hired developer... Is there a standard I should be using?

• whether I should hire a webdev consultant for a few hours to help me answer these questions, instead of asking stackoverflow

Thanks for any advice!