This might sound crazy, but here me out....
Okay, so we know...
Final Form Frieza>=Coola (Fourth Form)...
Coola needed the transformation to surpass Frieza...
Coola than tells Son Goku to use the power he used to defeat his brother...
Son Goku than fights Coola, and beats him around...
Coola than says he can see how Son defeated his brother...
so we know have...
Son Goku (Movie 4) > Final Form Frieza >= Coola Fourth Form
than Coola transforms...He tanks Sons KKX20 Kamehameha....
This means..
Son Goku 15
Frieza (1000%) 14.5
Coola (Fourth Form)
now... 15 x 20...
Son Goku (KKX20) 300
Son Goku (KKX20 Kamehameha) 350
1=a million of course...
this means, that Son Goku using Kaioken X20 is already in the billions..and Coola tanks him with ease...
And Son goes Super Saiyan, so we have..
Super Saiyan Son Goku = 750
Cooler (Final Form) = 600-650 (since Son wooped his ass)...
So Coolas power level is in the billions...
Movies work in completely different timelines...going by movie timelines Roshi is above Gohan (in Movie 2), Vegeta was killed on Earth (Movie 3), and 17/18 were killed by Piccolo before Cell could absorb them...or Piccolo killed Cell off the bat than killed the androids (movie 6)...
so, by my levels
Android 16 5,100,000,000
Kamiccolo 2,050,000,000
Android Saga Super Saiyans 1,200,000,000-1,500,000,000
Frieza (100%) 145,000,000
Semi Cell (Initial) 10,000,000,000
Coola (Final Form) 6,000,000,000-6,500,000,000
Coola is between 16-Semi Cell...
Now for movie 5...
Piccolo is a Super Namek in movie 5...Dende is the guardian of earth, so clearly hes fused with Kami...
and Base Goku>Piccolo in Movie 5...Piccolo was stuck fighting guards...
So we have
Piccolo 2,050,000,000
Son Goku 3,000,000,000
and Son Goku uses KKX20 on Coola
Son Goku (KKX20) 60,000,000,000
Coola wins easily...
Super Saiyan Son would be 150,000,000,000 (equal to MSSJ Son Goku, 50%...)
So Meta Coola should be 140,000,000,000-145,000,000,000.....above USSJ2 Trunks by a large amount...
and post repairs, hes even stronger...takes Vegeta and Son Goku to put him down.,..Vegeta should be 151,000,000,000-155,000,000,000 here...
So Meta Coola (pre repairs) is slightly under MSSJ Son Goku (50%) at the Cell games...post Repairs hes above Vegeta/Trunks...
I know it might sound crazy, but its whats shown and implied in the movies...