Ok so i have found a all in one cheap solution that is perfect for me.

We can drop this whole list.

• 1×Sim800L GSM module on breakout boardhttp://www.aliexpress.com/store/product/Free-shipping-SIM800L-GPRS-Module-with-PCB-Antenna-Automatic-Micro-SIM-Card-SIM800L-breakout-board/605000_32246510568.html
• 1×Arduino Mini Pro 3.3v
• 1×tp4056 based lipo charging module from ebay with protection curcithttp://www.ebay.co.uk/itm/141408998891?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
• 1×ds18b20 temp sensorSensors / Temperature, Thermal
• 1×1k ohm resistor
• 2×resistors for voltage devider
• 2×2pin jst connectors
• 1×3pin jst connector
• 1×LiPo Battery

And lets get ready for this nice board from Elecrow.

http://www.elecrow.com/32u4-with-a6-gprs-gsm-board-p-1694.html

It has a A6 GSM module on it with a 32u4 arduino running at 5v. The A6 module is nativly run on a lipo.

For the arduino chip there is a regulator.

There are 8 connectors on top. A connector for audio and mic, 2 digital connectors, 1 analog, 1 I2C, lipo connector, ISP header and a usb port.