ipage is my hosting site. Background: I've had the domain a year and a half. No completed web site yet. I've finally started with concrete5.6. I've been making progress! I would like to build the site with 5.7 even if I have to start over. I can't find 5.7 (or 5.6.3.2) on the mojo marketplace.

Can I use 5.7 with ipage? Will I need to start over? How to questions will follow if this is possible.
Thanks to whomever can help me!!!
KM