No its not much good. Khon Kaen is much better. Korat is ok. Dogs are everywhere in Thailand. Monkeys are worse.
Either you like old ruins or you dont.
Nightlife no idea. I stayed in the southern part. Mostly old guys in HH. Some looked totally lost.
Hardcore nightlife I dont know what that is.
Plenty of farangs at train station.
I would. The west is too pc. Too many rules. No restaurants on sand. Shops shut 5.30pm. No street food. A massage is no fun. The women are 85kgs with short hair. You cant flirt with every 2nd woman.