Schedule K-1 Schedule K-3 and filing an extension

When I enter the K-1 into TurboTax do I check box 16 as it is on my K-1?

Will I get an error in TurboTax because I don't have the K-3 info (available in June) to prevent me from printing and mailing my return?

With the following notes do I file Form 4868?

I expect a big refund.

My K-1 is from a Publicly Traded Partnership in which I am a domestic partner.

Current Year net loss is is -$5

Distributions $18

Box 1 -$5 a loss

Ordinary Dividends $2

Qualified Dividends $2

Box 13 Code K is $2

Box 16 is checked

Box 17 Code A $-2 negative

Box 19Distributions Code A $2

Box 20 Code A $2, N $8, V $-5

Box 21 Foreign Tax paid is blank

With these numbers I doubt the K-3 will make a difference.

Can you explain exactly what everyone like me should be doing.