335 is pretty good. Mamixal strength should definitly still be an important part of your program, but you can definitly get into some reactive stuff.
You are right, maximal strength does help your standing vert MORE than your running vert, but it is going to have a positive effect on your running vert as well.
You can definitly have a great vertical with your strength numbers (I know because I'm only a little above you and I'm right at about 39" from the run), but you should be sure to analyze your weaknesses. Here are two tests that you should do. You will need an accurate way to test your vertical (a vertex is good, a jump pad even better but a marked strip on a wall and some colored chalk can get you by).
1.) Force Output / Power Output Test
A lot of trainers talk about this test. Basically it is a test to see if you need more work on force (maximal strength) output or power (more towards the speed end) output. To do this test you do a maximal squat jump. Basically you dip down like you are going to jump up, pause for a full 3 seconds, then explode up into a full jump. Then you compare this to a maximal vertical jump. The barrier is right at about 85%. That is, if your vertical leap is 30" and your squat jump is 26", that's pretty normal. The bigger the difference, the more you need to focus on force production/absorbtion. If there is hardly any difference, you aren't using power as efficiently as you could be and you need to work on that.
2.) Power Absorbtion/Production Test
This is another pretty widely used test. Basically what you are going to do is test your vertical leap and compare that to your depth jump of boxes of various heights. Basically, up to a certain point, your depth jump should be higher than your vertical leap. It might look something like this:
Vertical Leap- 30"
4" Depth Jump- 31"
8" Depth Jump- 33"
12" Depth Jump- 33.5"
16" Depth Jump- 33.5"
20" Depth Jump- 33"
24" Depth Jump- 32"
30" Depth Jump- 28"
Usually there will be a pretty noticeable drop-off at one point. Make sure you get plenty of rest (about a minute between jumps) though, so you are not tiring yourself. Remember, it's testing, not a workout.
Basically this test shows you a couple of things. First of all, it shows if you have a weakness in power absorbtion. If your depth jump is not markedly higher up to a height pretty close to your vertical (20" box or so), you probably have a power absorbtion weakness. This is because when you do a depth jump you are giving your body extra energy to use in the subsequent jump, but if you can stabilize and absorb that power, you won't see an increase. If this is the case, you need to work on power absorbtion. This test will also set the guidelines for doing depth jumps. Typically you can do depth jumps from two heights. The first will be at the height where you attained the highest jump and the second will be the box height before the "drop-off". In the example I showed you, it would be 12" and 24" boxes.
I'd be happy to get a lot more into detail with the tests and what they show you and how you should structure your program based around their results and other information if you are interested.