I have corded and a cordless skill saw you I can loan you. If you have a steady hand you can make straight cuts. Everything on my stand was cut with them. I can help you too if you want. I like building things.
I just did a water change and pumped all the old water into a brute so i knew it was the same amount i was putting in. Would be great for someone setting up a tank. I keep my water pristine, this was just a routine change.
take the fridge apart and ditch the casing or shell paint the coils with an epoxy coating. Buy an after market thermostat or rob one out of a heater. Put the coils in the tank and run the t-stat in front of the main power for the fridge and bam there is your chiller.