I suggest minting the highest denoms you can so you reduce how often you need to remint to reduce orphan rate (not successful stakes). I am using mainly 1K's right now, and remint every two weeks or so. After Precompute is implemented, there will be no need to remint.
care to explain this a bit? do we have to remint our stakes after a while?
How does one easily remint?
Are you talking about sending ZeroCoin to myself? And, I thought it didn't matter the transaction size because coin-age doesn't matter. I was under the impression that all coins stake the same regardless of transaction size