The Best breeding project

I have a pup, Ituha, who has 2x merle and 1x inuit. I want MORE merle. Or unuit (if you can get that from RMA's... Lol) 

So my goal is to buy more RMAs to try and get merle/inuit, as well as set them to 100% so they will have the highest chance to pass down to pups! Then I will to the best of my ability get them to super great stats too!

here is what they look like right now:

The merle is in the colors Ducat and white, and the inuit is cream (all 100%).

My goal?: 10 markings of only merle/inuit

How far I am: 30%!

Things I require for the project:

-RMA's

-MR's

-MOC's

Things I might need:

- Base changer

once I get all his markings done I'll make him my breeding male! Is this a good idea?