Structure of "how about and what about"

[Storm]

I am used to the sentences below;

They are used to make a suggestion
1. How about having dinner together tomorrow evening?
2. What about a new pair of shoes for Robert on his birthday?

They are used to bring up points
1. What about the reports? Who is going to do them?
2. How about the dishes? I am not going to do it for sure.

++++++++++++++++++++++
I am also used to the sentence structure below;

A. how about / what about + present continuous form
Ex.
1.What about starting the discussion now?
2.How about eating noodles instead?

B. how about / what about + noun
Ex.
1.What about the new dinner tables? Are we going to buy it today?
2.How about a dinner together some time?

Can we build up sentences as follows:
1. How about we see a movie?
2. What about we go to Seychelles next summer?

Can we also use "what say" that often as follows?
1. What say we go to Beijing this weekend?
2. What say rowing a boat together now?

I know this is quite a job for you, if you would answer me. But thanks a lot if you would.

[Conchita]

[Prezbucky]

In the "what say" segment, number two could go like this:

What say we row a boat? (you don't really need "together" or "now", though neither word is illegal, per se)
_________________
Billie Jean is not my lover. Hee.

[Prezbucky]

Though I prefer the more direct approach:

Let's row a boat.
_________________
Billie Jean is not my lover. Hee.

[Prezbucky]

...NOW!

hehe
_________________
Billie Jean is not my lover. Hee.

[Storm]

hehe ...

[Conchita]

...gently down the stream,

Merrily, merrily, merrily, merrily,

Life is but a dream.

Or, if you aren't too musically minded, you could just say: 'Let's go for a row' or 'Let's go rowing'.