Carefully do the math on going a step backwards on the cam from roller to solid. With the Hyd. roller, it’s only the cam. With the solid cam swap, it’s cam, lifters, custom pushrods. You may, MAY, have to grind on the heads pushrod holes to fit them in due to the new pushrod angle introduced.
When all is said and done, unless you make a careful cam selection, your giving back power vs the Hyd. roller.