To get an accurate footage you need the depth of the shallow end wall and the deep end wall. The 4' average is normally the long wall of the pool. Based on info given 1,434 sq ft.

So what would be a rough estimate for labor and materials to glass tile my entire pool with apprx. 1434 sq.ft.?

A top notch glass mosaic installer will charge around $65.00 a square foot plus material. I wouldn't use anyone that charges less than $55.00 a square foot plus material. Most decent glass tile is $30.00 a square foot.