Timing of Deposits

[Gilmore]

Client has a safe harbor 401(k) profit sharing plan with a cash balance plan.  Plan and tax year are calendar year; 2018 return on extension.

The 2018 required contributions are the 3% safe harbor, the minimum cash balance, and the minimum profit sharing to pass nondiscrim.

Client does not have the cash to fund everything.

What are the ramifications if the client uses all available cash to fund the cash balance to reduce the penalty, but misses the deadlines for depositing the safe harbor and PS.

I know the deadline for safe harbor is 12/31/2019, but not so sure about the PS.  I know that the PS can be deposited up to 10/15 and still be allocated as 2018 for 415, but what are the ramifications if say both safe harbor and PS are not deposited until after 2019, especially with respect to the 2018 nondiscrimination testing.

Compounding the issue is that most of the SH and PS goes to the non-highly.  The majority of the CB goes to the owner.  So by not funding the SH and PS and using any available cash to fund the CB does that create nondiscrim issues in itself?

Thanks very much.