First, welcome to the forum - there is a lot of great information here to help you make your decisions.
I just finished my ERA build and, prior to that, had very little mechanical experience with cars. Other than
oil changes, I put a new water pump on my '71 Camaro but that was about it. There were several reasons I chose ERA and one of them was the ease of the build. I got a manual in advance and read it cover to cover. I also read the manuals of two other manufacturers. The ERA manual isn't perfect, but is far better than the other two I read. My starting point was with the body professionally painted and bonded on the chasis and the rear-end installed. I wound up removing the rear and gas tank and re-installing them due to a bearing issue and learned that it wasn't that difficult to do. With the mechanical experience you stated, you'll have no difficulty with a build. The guys at ERA are a phone call away if you have any questions and were always very helpful. Great company to work with.
There are two albums of photos of my build in my profile and a thread here if you want to take a look.
First Pics of ERA #795
To answer your question, yes, I'd go with ERA again.
Kevin