Hi, welcome to the forum!
Importing your sketches seems to be a good solution, but please note that you will have way more control points defining your curves than you will probably need. This can slow down your workflow, I would advise creating the sketches is Shapr3D too.
Regarding following a path I think I get the idea, but some more info or a .SHAPR file would be helpful for us 
Please attach them if it is possible. Until that, here are the two tools which I would use in your case:
