Dude put 25 points on Defence, 25 on physical and leave him as a good MC and that's it. With Freekick SA he's not worth it to turn him to DMC or AMC because the SA don't benefit neither position. There's not much difference between 75 and 72 not to mention he's more attacking minded with unconvincing defending ability. Why you need a DMC that bad? A 5* DMC is not a bad choice and trust me it's not a must to play DMC when the opponent uses a AMC unless he's favourite to win and your mentality is defend and counter. Best choice would be playing your MC in his natural MC position unless you already have many better MC with quality over 72. Worse comes to worse you can always play MC as DMC for few game, don't have any penalties or so minor you wont notice difference. Well....actually you might because an ideal DMC at your level would have 80+ defense overall and not attack.