I agree with the thermowell but completely disagree with the glass of water solution. A glass of water is the best way to allow for the specific heat retention of water to properly reflect the temp of the wort and keep the compressor from cycling on and off.
Yeah, don't be so hasty.
3 pounds? So...was this a partial mash? I'd hold off on dumping it if the primary fermentables were either DME or LME and made up 90% of the boil. Bottle, wait, and learn from your mistakes. It's hard to mess up beer =)
Stop. Just stop. Please don't tell someone they have an infection until you receive more information. Posting a simple statement like that may lead to others worrying needlessly. We need more information to accurately assess the situation and provide an informed answer.
It's good. Leave it be for at least another week then take a gravity reading. Record the trading then take another two or three days later. If it's stable, you're good to bottle /keg.
Yes you can. People do this all the time when sending beers in to competitions. There are many threads on the subject of you search the forum. One issue you may have is the carbonation fading over time tho.... but I'm not positive on that since I haven't done it myself.