Big keeper trade- Braun, upton, kemp- Please help

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12 team h2h league with standard scoring except obp and slg instead of avg and hrs. Each team keeps 4 (bumped to 6 next year)

my potential keepers right now are:
Braun
sizemore
Phillips
BJ upton
Lind
berkman
Josh Johnson

I've been offered a trade.

I get- Justin upton and kemp
I give up- Braun, a 4th rd pick (8th) and a 9th rd pick (13th)

1. Do I make the trade?
2. Depending on answer to 1, who do I keep