The answer to “"Let's do it!"” in the LA Times Crossword

"As if!" 3 ltr "Butterfly Dance" artist 5 ltr "Downton Abbey" cook 5 ltr "M*A*S*H" setting, for short 3 ltr "__ it down!" 4 ltr Abu Dhabi, e.g. 7 ltr Area exposed by an updo 4 ltr Artistic printing method, and a feature of rows 2, 5, 11, and 14 in this puzzle 7 ltr Biblical rider of a red horse 3 ltr Blades for some Olympians 5 ltr Blueprint 6 ltr Breyers rival 4 ltr Brontë orphan 4 ltr Calm 6 ltr Carefree 6 ltr Certain sib 3 ltr College where Robert Frost taught English 7 ltr Cost 5 ltr Cry in pain 4 ltr Darn 3 ltr Development sites 5 ltr Easy part of a sky in a jigsaw puzzle, maybe 5 ltr Electrically adaptable 4 ltr Elements of a strategy 7 ltr Endearment 7 ltr Expanse crossed by Odysseus 9 ltr Fail to share 3 ltr Greek life group 4 ltr Guitar accessory that may create vibrato 9 ltr Here, in Honduras 3 ltr Home of the Cyclones 9 ltr Hormel product 4 ltr Jazzy James 4 ltr Knights' neighbors 7 ltr Latvian capital 4 ltr Leak prevention measure, briefly 3 ltr Like a bowstring 4 ltr Like some pyramids 5 ltr Like van Gogh and Vermeer 5 ltr Londoner's pal 4 ltr Luau instruments 4 ltr May, say 5 ltr Mexican sandwich 5 ltr Mod About You polish maker 3 ltr Moral principle 5 ltr Moriarty, to Holmes 5 ltr Move stealthily 7 ltr Musician's better half? 5 ltr NYC home of Matisse's "Landscape at Collioure" 4 ltr Novice gamers, informally 5 ltr Oscar winner Witherspoon 5 ltr Part of P.R. 4 ltr Pizzeria array 4 ltr Playfully sly 4 ltr Power of classic films 6 ltr Prehistoric supercontinent 7 ltr Put away 5 ltr Recipe quantity 6 ltr S.F. summer hrs. 3 ltr