I'd say avoid the 7 PS builds as a 1-hander. Go for either 18 or 24 Strength. The difference between 6 and 7 PS has never struck me as worthwhile (with a 1-hander)- more athletics would serve better.
Athletics is a bit overrated imho, if you're not hunting archers or fighting cav or just being s key hero.
7 PS will be useful when mounted and will help to dish out that extra damage to one hit many folks with GLB
Also, I doubt Long Maul can crush trough anything with just 18 str, just like Mallet can't. 21 str isn't ideal for CT weapons but it is quite decent, especially with mighty weapons I'm planning to use.
Two years ago, answer to this dilemma would be 15/30 build with 10 ath 8 WM in polearms. I would use only two weapons, MW Awlpike and MW Bec de Corbin