well you will need some different kinds of filters to do cirtain jobs. and it all depends on your locations. I have found this is in my experience that filters for visual are very limited in their uses. I have a compleat set that i have access to and i think i used them twice now.
If your in the city, then go the light pollution filters though they are kinda exy it will make a bucketload of difference. maby even a nebula filter.
As for your eye pieces, the skywatcher ones are fine for now. The only things that i would do is get A, 9 or 12 mm illuminated rectical for your astrophotography, a 2x Barlow, and maybe a 32 or 40mm eye piece.
Remember that a barlow for visual observing is a powerful thing as it turns 3 eye pieces into 6. eg if your current set is something like 15, 25, 40mm add the barlow in and you will have 15, 25, 40, 7.5, 12.5 and 20. I wouldn't go too much past that if your main aim is going to be astrophoto. save your pennys for that as that is a expensive arm of astronomy! and a camera you will never beat as you will see so much more of the sky.
Thats my 2 bobs worth