It all depends on how many people you intend to have at your renewal.
We are doing an Escape package for our VR/Wedding (we went to the courthouse) and having around 10 including us.
I am looking at doing a Wishes Fireworks cruise now, since the pontoon boats will hold about 10 people. If you think you are having more then 10, an Illuminations Dessert party might work better for you, if that's in your budget.
Really, it's all going to depend on what you want. Cheapest is Memories, where it's a ceremony only & you have up to 4 guests + couple, Mid pricing is Escape you can have up to 20 guests + couple and you get a cake & champagne celebration after your ceremony, and then most expensive is Wishes where it's 20+ people and you have a ceremony and full reception etc.
Check out Carrie Hayward's Passporters Guide to Weddings here:
http://www.passporter.com/disney-weddings-honeymoons.php
She also has a Disney Weddings Podcast you can find here:
http://disneyweddingpodcast.com/
No it's not a shameless plug to promote her, I found her passporter book & website very helpful in making our wedding decision. And it was worth the ebook price in my opinion.
Go to Disney's Fairytale Weddings website, you can also do a "mock" price point of the 3 current packages they offer-- Memories, Escape & Wishes.
https://www.disneyweddings.com/
And there's currently a "4 Hour Wishes" package being offered as well, there's a thread already started on that as well.
Hope this helps!