Beginner going out in 7 foot waves?

Hi everyone, I started surfing a month ago and I am hooked. It's all I think about now, and I am desperate to get back out on the water, but the forecast for this weekend is 7ft+. I am kind of intimidated by this, because when I went out last weekend, some of the sets were 5+ ft and I got smashed paddling out. I know how to duckdive, but right now I am using a 7ft foam board - picture below (and it takes me ages to get the nose down and I have nowhere to practice. I can rent a shortboard when I get there, (I've never ridden one before) which I think I could probably duckdive. Once I get out to the lineup, I'm not worried about wiping out (everything that could happen will probably happen sometime anyway). If the swell is from the same direction as last time, there are rocks I can tuck behind where the surf will be a bit smaller, but still pretty big for me. What are your thoughts on me going out? Thanks in advance for answering.
