First of all, it is very easy to use, if you know the SMM working principles, then technically you're able to fix a good strategy, but of course it depends on your imagination and the ability to inform the society as well. But in general, if you want to promote a product, you need to have a serious marketing strategy, this is help you to reach to the optimal result and the highest income. There are specialized companies, for example diceto, which applies many tools in order to create the perfect image of the product. They create the site, they make a beautiful design, they do a serious marketing strategy and the most important, is that they can work with different segments of consumers on the market.

I had a few generators in the garage, they remained from times when I was installing solar batteries for the private houses. One is 17kva on two car wheels, big and powerful, I will never sell it. One for 5 and one for 3,5 kva as you need. I think that 3,5 is strong enough to power all the house, just need to have enough fuel for that. Maybe I can sell it if you want because I didn't used it that much. But if you want a new one, I can suggest you to check https://backyardtoolshed.com, usually when I need new tools I consult this website and always find something useful, reviews, lists with tools and so one. So dm me in case you will decide.