This is from Claire Paniccia that helped me figure out the ecosystem that would work for me. She recommended that you choose from one to two in each category, whichever are the most appealing to you. Scroll down for info on 30 day challenge.
This will get you on this gallerists email list, it is how he likes to receive submissions. No need to send portfolio to him. Could have many uses. We did this and used it in recent past, good instructions! https://xanadugallery1146.ac-page.com/blog-stepbystep-digital-portfolio-creation-guide