well, yes, that model looks good, this one, if you could attach it, then i'd gladly texture it real quick
EDIT:
Here, I fixed the problems you listed, anything else you need ,just tell me.
Also, for future reference, look up the Software GIMP, it's pretty much a free version of photoshop, very good for texturing, and also look up Blender, a good 3D modeler, better than sketchup, and use it instead, it's completely free, and is much better than Sketchup for game modeling.
My Mind is very odd, it can memorize hundreds of commands, memorize 2 dictionary's worth of words, and make detailed 3D models. Yet my mind has trouble with the most simple calculations.