I think the elephants would be fine. No need for all of the animals on the invitation.
My baby shower is also in June and I'm doing safari theme with all the animals as well...I live in California so in l.a they have alleys and I was able to buy everything in one day...good luck girly it's not the cheap way out either it's actually different from just having the plain baby boy baby shower That's my opinion..it's all on how you bring everything together..
Really if you're buying them its whatever you want. I personally love elephants and my friend did that theme and all her stuff had mostly monkeys and a few other animals here and there so its your preference. You can download templates on etsy of different invites and then print as many as u want also that's what I did I have 2 different invites that I downloaded. Mine were hard to find though because I am doing Alice in wonderland theme
I was gonna go to party city to see if dey have different animals n a multy animal table covers to go with the theme
What ever theme you chosw maket sure you can go any where for suplies....my baby shower is april 19th and i had pink jungle theme and now party city is discontinuing that theme ): lucky for me i bought ALMOST everything i need and the stuff i still need i can just do plain pink black and white stuff
i did but i liked everything lol
And I really like your theme you should google things you can make for cheap to go with that theme