The site I built for my client http://goo.gl/yrLUy4 is highly effective for them in terms of sales. It is time for a refresh. My primary concern is speed and performance. On GTMetrix it manages a Page Speed grade of 93% A, but using the Google tool it gets 43/100. GTMetrix shows a horrendous 16.48s load time.
The client LOVES the site and surely won't let me strip away photos, features, or content. It searches very well on Google for it's keywords. But I'd like to rebuild it lighter and faster.
Suggestions? Are some themes slower out of the box than others? How can I tell pre-purchase? What plugins should I stay away from? What are the avoidable things that add unnecessary fat to a site? What is an effective strategy moving forward?