Similar weight to you, and yes you want it windy.
A lower boom helps, as it gets you closer to the board. You can also practice beach starts in shallow water. If you have a trashed short fin you can use in a bigger board, then you don't need a huge amount of wind to get your first beach starts. That lets you start really shallow and really light wind. Then you can just go deeper and deeper once you figure it out. The deeper you get, the closer the sail size needs to be what will get you planing/fast. But really good waterstarters can do it without planing wind with special techniques...
That said, my first beach starts were on a light day, before I was planing on a 9.5. First waterstarts with an 8.0. It was tiring learning to swim the sail into the right direction. If you are in a windier area where you can use a small sail, then great! A lot of it is learning to recognize the feel of "enough". I had to be around other people to see the size they used and have more wind than I initially thought.
The days I learned the most I had figured out planing, and I started trying planing jibes. I was falling so much that it gave me lots of opportunities to waterstart...