it shouldn't be an issue.
i found myself in your position several times last year asking about which bindings were best for which skis.
honestly, after a few queries everybody pretty much told me that no binding was really better than the next, it all boiled down to personal preference and $$$.
most folks will recommend getting Rossi bindings if you are riding Rossi skis 1. because Rossi bindings are made by Look, one of the more tried and true bindings out there and 2. Mounting Rossi bindings on Rossi skis extends their warranty.
i'd say whichever binding you can score for cheaper between the Mojo 15 and the Rossi Axial 2 or Scratch, go for that.
personally, last season I bought Rossi, Marker, Salomon, and Tyrolia (Mojo) bindings and had different ones on every ski in my quiver. The only binding that I really didn't like the feel of was the Rossi one. But that very easily could have been because of a band mount. The Markers I had were hella heavy. But I found that I liked the feel of both the Salomon and Mojo bindings, so I made sure to purchase an extra set of those to have as back-up.
You'll find that the core bindings out there are the Look P and PX series, the Solly S900 series, and then there's a small faction of us that really dig the Mojo series.
While Marker has taken some heat over the past several years, a lot of folks are hyped about the new Jester, which is another option. And I know a few folks who actually dug the old Marker Freeride series of bindings.
I would personally dig around for the cheapest prices on the Mojo, Rossi Axial, Solly S912, or the Look PX12 and get in where you can fit in!