Exchange: Can I see the amounts of money to back and lay at SP?

You can indeed. SP bets shown in the runner information pop-up, which you can see by clicking the graph icon next to each selection in the market view.

In the Traded Table next to the graph, you will see two new columns, backers' stakes and layers' liabilities at SP. Amounts requested with an odds limit will show in these columns next to the respective prices with backers' stakes showing as blue and layers' liabilities showing as pink.
(Note this is the opposite to Exchange bets in this table where backers' money shows in pink under "To Lay" and vice versa).

SP bets on which no price limit was specified will show at 1.01 for SP back bets and 1000 for SP lay bets.

The Far Price will give you an indication of the balance between SP backers and SP layers.