Too much yeast? And fruit in thumper

[Skynyrd19]

Im new to this and I have a few questions,
1. I'm making a 20 gallon run of mash divided between 4 buckets. I got distracted and accidentally put 4tbs of yeast in 2 of the buckets rather than one tablespoon in each. Will that ruin my mash? Should I try to run it or just dump it now?
2. If I do flavoring, can I run a regular corn mash with fruit in my thump keg to add flavor? I'd heard about it being done and curious if it will actually pick up the flavor of said fruit.
Any help will be appreciated, thanks.