Winter Championship for Heroes 3 [Kyiv-2014]

Tomorrow I'll buy the tickets. The departure from Moscow is on January 2nd at 16:57, and the arrival in Kyiv is at 04:13, or the departure from Moscow is at 22:15, and the arrival in Kyiv is at 11:26. Which time is better? Honestly, I prefer the train that arrives at 04:13 because I can go straight from the journey to sleep, and I'll have to go through customs not at 3-4 a.m. (as with the second option), but at 23:00, and the first train also has almost 3 hours less travel time. But I understand that the house will only be available on January 3rd from 12:00, right? The return train leaves Kyiv at 13:20 on January 7th and arrives in Moscow at 05:33. Is this time frame okay? Or is the house available until the 7th, and the departure is on the 8th? And here's my suggestion to team up; it's still possible, but only for the time I've outlined above.