Hi and welcome Million-ells :) Nice to have you here with us.
From what I read in your post, I'd say you're pretty much on the right track. And from what I have read on forums and blogs on and off SaleHoo there isn't really a single set of steps or an outlined guide to follow in order to be successful when it comes to selling online. Since each opportunity and each situation will be presented differently amongst the millions of sellers worldwide.
But a very common advice I have often come across is: read..read..read..research..research and research some more. Everyday there is a new trend, a new product, a new supplier/directory - so you have to never stop your cycle of learning in order to excel!
Here are a few recent posts that I find to have really good tips which I think you'll find quite helpful:
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Also, I suggest downloading your copy of our User Manual - its a new addition to SaleHoo and it has great tips for online selling, product sourcing - the basics you need to survive the competitive market.
Don't forget to explore our blogs too - we have really good and experienced writers who can truly help you out with your questions
Hope this helps. Sing out if your need help with anything else! :)