[Plugin: Instapress] How to replace and add custom Pagination

Hello!

Have been trying for a while in attempting to implement a different pagination than the default used in the Instapress plugin (which is a basic Previous/Next on the top and bottom of the page) to something along the lines of WP-Paginate which is nicer & numbered. And my coding skills are rather novice, so have just been doing a trial & error.

Any help would be most appreciated!