ESP8266 (esp-07) powered by battary(s) for at least 1 year

Hey all I am trying to see how long I can possibly have a ESP8266 ESP-07 operate with only 1 or 2 of the Lithium Ion Battery 18650 Cell which claims to have 2600mAh.

I am making a window alarm sensor and I'm looking to incorporate a window reed switch in order to check it's status via the ESP8266 and if its opened (meaning the window is not closed) then send something via WIFI to a REST service. Likewise, if the reed switch is not opened (meaning the window is fully shut) then sleep.

The flow with only ESP-07 would look something like this:
1: Power up for the first time.
2: Send Date/Time, window closed or opened, etc.. via ESP-07 WIFI to the REST service.
3: Have the ESP-07 go into deep sleep mode.
4: Wake up from sleep after 1 minute.
5: Check window reed switch.
6: If reed switch is open then send REST service via ESP-07 WIFI.
7: Goes back into deep sleep mode.
8: Loop back to #4.

The flow with ESP-07 & ATTiny85 would look something like this:
1: Power up ESP-07/ATTiny85 for the first time.
2: Send Date/Time, window closed or opened, etc.. via ESP-07 WIFI to the REST service.
3: Have the ESP-07 go into deep sleep mode.
4: Have ATTiny85 check every 30 seconds for window reed switch status.
5: If reed switch is open then send REST service via ESP-07 WIFI.
6: ESP-07 goes back into deep sleep mode.
7: Loop back to #4.

It would seem that using the ESP8266 along side an ATTiny85 would make it last longer since I could check the status of the reed switch via the ATTiny85 and if it see the window closed then pause and check it again in 1 minute. If the ATTiny85 does see the reed switch opened then start up the ESP8266 and send the info via WIFI then go back into deep sleep. However, I am not sure how this would be on the battery side of things - if it would be less or same or more.

I'm looking to see how long 1 and/or 2 of the Lithium Ion Battery's would last (in days) with using just the ESP-07 and also using both the ESP-07 and the ATTiny85 as explained above.

I've done some googling and found a few websites that show how to put the ESP-07 into deep sleep mode but really wouldn't say how long it would take with my setup above. Most were using standard AA or AAA batteries.

The overall goal is: Have the window alarm power last at least 1 year.

The items:

The battery ESP-07 consumption chart I found:

Datasheets:
Lithium Ion Battery 18650 Cell
ATTiny85
Window Reed Switch (Generic) or Mouser (Generic)
ESP8266 ESP-07

your goal is to find out how much power it takes to connect to a wifi network, then send the information, then go back to sleep.

there are lots of ways that are way less power to do that task.
then have a receiver, with mains power, connected to the internet, receive the data, then post on the net.

in any case you have to have some internet connection, that implies constant power at that point.

I get about a year out of my rain sensor, sends an RF signal. sends updates about every 2 minutes of battery level and rain counts. that is on AA batteries, not the 18650. I was thinking of taking a solar panel from an old calculator and trying to extend that to more than a year.

my gut feeling is that the huge power cost is using wifi as the wireless connection.

Ah just found this youtube video(s). Seems just what I am looking to do. Thoughts?

Original video:

Feedback (updates) from the above original video:

So if his setup lasts a long time on CR2032 with 240uA batteries then I'm guessing a 1000uA+ would last even longer than that?