Minor questions about HP Washing for DKs/DrKs

At level 12X or 13X I think you should have around 8.5k to 9.0k base HP. Let's say you get 50 HP for every point you put into your HP (you may get more, you may get less. but let's go with 50) that means 250 HP per level which means you need about 15 levels worth of AP (75 AP).

Warriors get 2-4 MP per level, plus the 6 extra MP from the Int equips you'll be getting 8-10 which means 2 to 2.5 AP since it takes 4 MP out.