I know money, money, money, but I would add a wider lens at least 18mm in 35 mm film terms. That would give you the 35mm equivalent of a 28mm lens.
You can get pretty impressive images ( as you have done ) with what you have, but a wide angle will give you a whole new perspective.
On the filter front I would only consider neutral density and polarizing.
It really is down to budget.
Don
|