Exhibitons ahead

Upcomming exhibitons makes it difficult
So, it's finally time for more exhibitions. Sold 4 works on an exhibition last weekend, a rather small exhibition if I may add but nevertheless fun.
In october there'll be another exhibition but a much larger one this time. And I'm so in doubt how to present my work. Which pictures to go for? Should I use canvas, acryl, copies on kapa or frame them in plain glass an passepartout? What sizes?
Planning on having a coffee-table book for sale on that exhibition as well. But time is vanishing so fast. I have to make several decisions pretty fast....