I would freeze them, if you had the room. It always helps..
Yeast choice depends on the must, and your end game.
I've really come to like working with apple (and pear by proxy - I like a 50/50 ish blend, a more rounded and complex flavor profile).. but there's two ways to make it..
Bright and crisp (Riesling -esque) or with more body and smoothness (Chardonnay -ish)
If you like it bright and crisp, and have tart apples, then something like 71b would convert some of the harsher malic acid away without overdoing it.. If it's crisp, but just right, you have more options (or if you know you want a sweeter finished wine, you can sweeten it to balance the higher acidity) - 1116, D47, or a couple other more uncommon choices.
If you like the rounder, smoother option, those same yeast options are open, but it's followed up with a Malolactic fermentation to convert all the malic acid to lactic acid. Usually takes a small tartaric acid adjustment after that, to liven it up again, but to me, the extra steps are worth it