Arduino

So the other day I got a ten buck gift card for ebay. So I spent a total of a day and decided to get in to Arduino as it has interested me for a while! So for ten dollars plus 86 cents I came out with a generic Arduino R3 and a LCD Shield and voltmeter and ammeter combo for a small desk top power supply I am going to build. I have two really nice hobby cases that I got from a manufacture for free but you have to list a college or business to get the free samples. These cases are nice and will fit better on my computer desk than my bulky lab psu. I may end up selling that one if my project will work out like I hope it will. I have a old lap top psu that is 30 volts at 1.007 amps. Which is fine for what I want to do. I never have any project that needs more than a amp if I do I have my lab. But back to the main topic Arduino. I want to use my Arduino when I can finish purchasing the parts to make a mobile solar security cam for my house and I think Arduino will be the best thing for this. I plan to have three cams on the system. These micro cams are all running 3.5 volts at 45 mw so not a lot there plus some mini microphones to pick up sound. and then a LiPo battery to keep the system up and running. A 12 volt solar cell with the system to keep the LiPo battery charged. I can get a wireless system card that will be attached to a monitor and feed a live feed to the house.

Now That I have explained the Idea do any of you that have experience with Arduino or Raspberry Pi Think that this will work as a system or Am I going to have to rethink some of my Idea so that I can get a workable system out of my Idea. I would rather build a small surveillance my self and make it portable versus paying hundreds of dollars and have to plug it in to a wall out let. I know the plan does sound a little over ambitious! Am I wrong or do you think that it will work?