Guild Wars 2

I am a newbie to the game and I have been toying with the idea of having 20/20/30/0/0 for my build. I am only 26th level. I love the bomb kit and elixir gun. I want to be able to heal as well as fight from a distance (elixir gun) and close quarters (bomb kit). Will this work WELL or am I barking up the wrong tree?
I play PVE only…I want to enjoy myself but be useful to a Guild too! Would it be better to run 30/0/30/0/10 and just toss grenades for my distance attack? I really like the elixir gun because it provides healing, though. Also, what about a 20/0/30/20/0 build—-it provides a whole lot of healing aaaaand regeneration when I am using a kit? For this one I guess I would use grenade kit and Bomb kit. Did I mention that I love the elixir gun? Is it considered a kit? With my current 42nd level asura engineer I am aiming for 30/20/0/20/0 traits. I enjoy using grenades and elixir gun for distance attacks and bomb kit for melee. Is this potentially a good build? I throw a few grenades or shoot from a distance or I just barrel in to the fray and bomb the heck out of the villains in PVE. I need some good advise because the engineer is my favorite!

What you should seek is a leveling guide. Traits can be adapted and only your own experience will reveal the play style that suits you well.