I've played a MA/DA *scrapper* for awhile, though he's often mistaken for a stalker at times... XD
... Well, from my experience I'd say that the combination is always going to be a bit challenging no matter how you cut it. Both sets tend to eat up a lot of endurance, so rest stops tend to be become a part of your regular routine. Invest in the Fitness pool (hey, that's why they're making it an inherant after all). Consider sacrificing some of your damage-lite attacks for Tough and Weave from the Fighting pool, since you'll mostly rely on quick-hit ambush tatics no matter what you do, though MA's soft control tends to help keep the mobs from taking you apart at their leisure. As is only sensible with DA, pick up both Dark Regeneration and Soul Transfer as soon as you can, then invest heavily in them, particularly when it comes to accuracy. And knowing how Soul Transfer tends to work, you shouldn't be afraid to "make death part of your attack chain"...
Debt doesn't tend to mean much anyways.
Sadly, I'm not all that great at writing up or putting together builds, so I can only give general advice on the subject, most of which is common sense. But hey, when all else fails, just remember that it's just a game and that you're playing you character because it's fun, not because it's easy or because it came recommended by someone else's guid.
