Baby registry etiquette? Price range and amount of items help.

Sarah • Been with hubby 7 years & married 3. Luna Violet 💗 horn Oct 2015 (conceived with glow help!) & River Elijah 💙 born Aug 19 2017! Both natural !! 🎉
So this is my husband and I's first child. We have finally finished creating our registry and now I'm curious as to wether or not there is a certain amount of items that would be considered to many? Or price range we should stick too? 
We currently have 72 items on our list. And our price ranges of the items are as follows:
33 items under 25$, 19 items between 25-50$, 12 items over 50$ & 7 items over 100$. 
Does this seem reasonable? We only put things we really needed and maybe a few clothing items we wanted but otherwise baby items are just expensive. I thought it was perfect until my mom voiced concern that it's too pricey. but it's not the 90s anymore and my registry was done with research, and those splurge items are necessary items like furniture, rocker, stroller & car seat, baby monitor, & swing. 
Here is our registry if you wanna look: http://babyli.st/sarah-and-elijah-ramos
Any and all advice is welcome! 
Thank you so much!