Marksman or Bowmaster

There is something I should note though: I plan on using Trumark's Bloodmaster build in 4th, and I know that Bloodmastering doesn't hurt a MM's damage as much as a Bowmaster's...hmm.

Not true. Well.. kind of true, but I don't think you understand. Bowmasters lose more potential DPS per DEX because they have more to lose. They both lose almost exactly the same percent of their potential damages.

(Example: I get taxed 30% of my yearly income which is $50,000. I lose $15,000 a year. My friend makes $100,000 and also gets taxed 30%. He loses $30,000 a year. See, he lost more but we both lost the same %. In this case, stats such as DEX take off a % of your damage. Bowmasters lose more because they have a "higher income," doing more damage.)

Also... if you're not laggy, I don't think you have any reason to die at squids past the first 10 minutes. After 10 minutes, you should realize that the only thing that does more than 150 damage to you is Goby Houses, Purple Squid lightning, and touch damage. Black squids are laughably weak. I hope you were talking about Purple Squids, but even so, you shouldn't die there unless you absolutely cannot keep your eyes open while you train. Even they do pathetic damage for their level. Spirit vikings do more than triple as much damage with their ranged attack. Dying at squids pretty much means you lag, you can't pay attention, you don't have enough HP to take a hit, or you suck at this game. Sorry to be the condescending one, but I can't believe (non-laggy) people die at squids.