It is good that you're finally here. Maybe you were thinking about it firs because there's more to forex trading than what people think when they first join. I hope you now have a clear image of what it i and what you need to do for you to be a good trader. I wish you the best of luck. Make good use of the forum.
I think all timeframes are valid. It's great if you find longer timeframes less stressful - it's important to find what you feel comfortable with. Many people don't feel comfortable holding positions for a long time, it varies from person to person.