You may want to work with a kit - that way you have all (or most) of the materials you'll need right at your disposal and you won't "overspend" or get overwhelmed with all kinds of possibilities... helps me keep my focus
I'd use a kit or a line of pp and embellies. Makes for a cohesive album and makes your job simpler. Or you might just shop for a few colors and choose from several lines. You could also pick just a few special pps and embellies for one or two very elborate pages.
I've been working on my daughter's wedding album so you can take a look in my gallery and see what I've been doing.