You won't have a FG reading until the bubbling has stopped, so it will be difficult to predict when fermentation is complete.
Upon making my last IPA, I dry hopped on day 10, which was about 2 days after the airlock stopped bubbling.
Just remember, the more attempts you make at "accessing" the beer, the more your risk of contamination increases.
Token Brewing - Downers Grove, IL
Amber Ale - 2 bottles left
Bourbon Oak Porter - 8 bottles left
Oktoberfest - 4 bottles left
Hopped IPA - 7 bottles left
Golden Orange Wheat - 16 bottles left
Black Cat Espresso Stout - 26 bottles left
College Blonde - In the keg
Rye'n Ale - 22 bottles left
Bourbon Oak Porter - Barrel on 5/6
Hromada - Fermenting