Kangertech Turbo questions

[Hard Luck Joe]

Hey guys, I new to the forum. I have 3 questions, (1) I just bought the Kangertech Turbo with the 1.8 ohm coils. The booklet says 20-25 watts is ideal ? (2) Also I just ordered 0.8 replacement coils what wattage would be good for those? (3) I'm so used to dripping that I'm giving myself headaches trying to pull off of this! I have it set at the max 5 holes ! Is there anything else I can do to get more airflow? Adjustable airflow drip tip? But I think that would give me more air less pull. Any help would be great. Thanks in advance! Joe