You can aggregate the checks and you can always be more 'generous' than the regulation allows as long as you're not more restrictive.
I would aggregate the deposits, give the $2,686 the next day, give $2,314 the second business day (totaling the first $5,000 that has to be made available by that time, and hold the remaining $9,676 until the 7th day (presuming your funds availability policy allows exception holds).
_________________________
I hear and I forget. I see and I remember. I do and I understand.--Confucius