We'll take your file and "cook" your color two ways by applying sRGB to one profile and Adobe RGB to another. This only works if your images are not already converted to CMYK.
In this process all you need to do is let us know which version you like better by saying either "I like sRGB" or "I like Adobe RGB". We will target whichever one you like more.
What if I like some images Adobe RGB and some sRGB?
I have bright colors (like highlighter pens) in my document. How will those turn out?
Example
The folder we send you will look something like this. One file has the entire document set as Adobe RGB. The other set to sRGB
Adobe RGB (left side) has a larger range of color so colors will be stronger and brighter. sRGB has less but most programs have sRGB defaulted so the colors will likely be closer to your intent.