This the right way?

I'm a newbie at robotics mainly drawing on previous knowlege of Mechanics and electronics.I'm building a modular chassis from a BEAM
design for a simple S.roller for adding on to.
First, it's power by a 24 x 33 mm "competion sized" Solar cell OR a 9v Batt.Both powersources are connected to a standard .50 switchbox. The box is connected is connected to a circuit consisting of PNP & NPN Transistors connected to a 1381J using the P's as ground,output,and input respectively.There are two swivel-mounted Nikitas on each side connected to a 3300uF Capacitor.
As soon as I find a cheap microcontroller, I'm using these light detectors and IR sensors to :
A)In solar mode,lack of light on the Ph.Sensors will cause the Bot to switch box conduits until light is restored.
B) Run away from heat sources (**hack**Humans**wheeze**)
Does this sound like it going the right way?
Thanks if you read this far..
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