Georgia Travel

I plan to travel to Georgia in late May, and I would like to visit Kazbegi. Truso valley and Juta valley are on my list. However, I am not sure about the weather condition of the low altitude hiking trails in the region. Anyone know about the conditions of trail to Fifth season?

Also, there is not much information on the transportation in the region. I sought out to MTA but they started to provide service on June 15 this year. Is it a must to book a private driver, and what are some good options to book one?