Easy As...: Is this Sudoku Variant Easy?

Today's Puzzle:

Easy as Pie of course. Now you'll have to excuse me whilst I persuade Mrs. Sleuth that we need to eat some pie tonight.

Link to Play Along:

Easy as ... by Ryx http://tinyurl.com/SudokuSleuthEasyAs

Rules:

Normal Sudoku rules apply

Killer Cages: Numbers within a cage sum to the small number in the upper left corner of that cage.

Kropki dots: Not all dots are given. White dots separate consecutive digits. Black dots separate digits that have a 1:2 ratio.

REM Constraint: There must be at least one "3" in the outer corners of the puzzle (r1c1, r1c9, r9c1, r9c9)