nifty futures positional

By mid month, i mean the next month instead of current month's contract. I see there are three contracts and i want to do positional trading. So, is it safe to buy next month's contract in terms of movement, volume. Please share your experience.

Only Rule for trading is: Take trades only in the direction of the trend. No specific rules. Just a keen eye on the risk. Will never risk more than decided (except in case of Gaps).