A device that can send out alerts if the temperature goes above X?

I am new to arduino but I am wondering if this is doable and what my rough costs in material would be.
I would like to make a device that has a temperature probe that sends out an email if the temperature goes above a certain number. Besides that, I would like it to right the temperature to a remote database every x amount of time. The temperature probes would have to be about 3 feet long on and flexible, but I only need the temperature readings from the tip. I found such probes, but I would need it to be able to withstand temperature close to 600 degrees Fahrenheit.

From my limited understanding, this should be relatively simple. Am I missing anything?

Thank you

MAX31855 chip on a breakout board. $14.95 https://www.adafruit.com/products/269
Type K thermocouple. $9.95 Thermocouple Type-K Glass Braid Insulated [K] : ID 270 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Ethernet Shield. $6 from eBay.

Thank you. Which main board would be the best for this?

Thank you.