There is a lot of gear you have to pack and carry to a triathlon. With the exception of your bike and the few items stored in your saddle bag, all the rest has to be packed in something. You could cram everything into 2 or 3 different bags, or you could purchase a triathlon gear bag that compartmentalizes it all for you.
I have an electric bike and I love it! But you need to do some careful research to make sure the one you choose will fit your needs properly. I did about 6 months of research before I bought mine. It’s a small, foldable, fat tire electric bike — the Lectric XP E-Bike. I compared it to the Rad Power E-Bike. Here’s what you need to know about e-Bike tires, fat tire ebikes, electric assist, pedal assist, electric bike range, maximum speeds, eBike classes & laws regarding where you can ride an electric bike.