Thanks for your suggestions. I will try to follow it. Any specific points for preparing writing section. I thought celpip would be better as I need not worry about spelling as it has spell check in writing and options to select in listening. I guess celpip reading/listening is okay. But in speaking, you have to record your response for specific time given.
Anyway, If I will attempt, I will try IELTS though it has it’s own challenges.
Please suggest about writing section too.