Another staking question. Is it the total number of coins staked that helps the blockchain move or is it the number of wallets staking coins or a combination of both?
Hypothetically if I stake 10% of the total coins created would that cause a dramatic increase in the number of blocks that get generated?
It's sort of both. You can think of coins being staked as hashing power on a network, right now with a low difficulty small chunks of coins are able to stake easily, so there would be no real advantage to stake a huge amount of coins in one block. It makes more sense to break up the coins into smaller amounts (can be in the same wallet) so that they stake more often. Once difficulty increases there's more of a reason to stake larger chunks of coins since they will solve the blocks quicker than small amounts, like big hash power.
If you want to see how the coins are stored, turn on coin control in the Display tab of the Options window and then go to the Send Coins tab and click on inputs, then in that window click on List mode. This list shows you how the coins are actually stored as "chunks" in the wallet. You can send coins to yourself to break up a big chunk or combine small chunks, but keep in mind that doing so resets the coin age, so you'll have to wait 12 blocks again to start staking.
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Checked the block explorer - looks like the PoS difficulty is starting to adjust! We might be fine without PoW!