Thats the main problem - I can tell you the street name/number, but unless you have someone in there to translate its gonna be tough to make them understand what you want
The bus station is located on Chavchavadze ave 67# in Kutaisi, Behind the MacDonalds. Price should be 10 lari. Thats a lot of baggage btw, but I think it should not be a problem for the bus