what is still open for me is: what determine the probability that my timenode does complete the transaction? (number of day, day-mint-power)?
What is the ROI?
From here:

"All TimeNodes must prove they have at least 333 DAY tokens or a TimeMint in order to execute Ethereum Alarm Clock transactions." ->this means if i have a TimeMint from the ICO- i do not need any additional DAy-token? is it better than to run 2 nodes- one with the coins and one just the timemint ? Well basically same direction/question as the first question

Happy to hear about some answers;)