EggsGuy,
Everyone has a favorite line and I think a lot of it will depend on your rod and casting style.
You say you are new to flyfishing?
When I got into fly fishing I had everyone in Gods name give me advice on what to use and what to buy. I think you have the right rod for the type of fishing you are going to do. If you have never casted a 8WT before, I know from my own experience I can tell you what I would stay away from. I don't think the cost of a line is the basis for the choice, youhave to realize that fly lines are not like mono, if you take care of it you will have it for years.
Now to the lines, I think that Cortland 444SL and the SA mastery series floating lines are the easiest lines to cast not to mention they will get you distance. They float high and it is a cinch to mend. For the Sinking lines, I would go with SA mastery wet tip express, or the Cortland 444SL QD ( salmon/ Steelhead )taper.
The reason I dont like the multi tip lines are that they seem to hinge at the loops. I have noticed this in both the SA and the Cortland, I think in my opinion you are better off getting a floater and a sinker. Teeny lines are ok but over rated in my opinion. Cabela's has there Prestige lines, which I started with has a nice slick coating and it floated nicely, not a bad line to have , since they are on sale at a such low price.
It is nice to have a good rod and reel but it will do you no good if you can't cast with it, spend a little and get a quality line the first time. There are many Fly shops around Seattle and the surrounding areas that will let you try the lines at their shop before you buy it. take the time and try the lines with your rod, you will have a better feel for it then relying on my opinion or any body else. Good luck.