SUBREDDIT: r/relationships
TITLE: I [29 M] want to propose to my girlfriend [28 F] of 4 years, might have talked too much.
POST: My girlfriend is expecting me to propose, I bought the ring in her size and everything. It's beautiful, and I'm excited. But I think I talked to much about HOW I intended to pop the question to friends/family. 

I spoke to one of her sisters, her dad, and one of her friends (mutual friend of ours) about doing something extravagant for the proposal itself (costing an extra like $700). However, we have a lot of stuff booked this whole summer and I don't think I can afford it.

I want to propose another way, but I don't know if the original plan secretly got back to her, and if I propose another way, will it let her down? The proposal is supposed to be a happy, awesome 
memory, and I don't want it clouded with some disappointment.

Has anyone been in this situation before? Should I ask the people I told if they spoke to her about it?
TL;DR: 
Talked big about an extravagant proposal, now can't follow through, not sure if the original plan got back to the bride-to-be and don't want to disappoint her.