Deferred Purchase Price Structure

How common is it to structure an acquisition with a portion paid upfront at close and the remainder paid shortly after (ex: 80% at close and 20% within 90 days)? - bank financing is already approved, - seller financing exists, can’t go above 10% - and the buyer is mainly optimizing working capital flexibility during transition? Curious how often people see: - staged cash payments, - temporary bridge structures, - or delayed seller payouts in SMB software acquisitions. Would love to hear how others have approached this.