Filters? Go with what you've got and see what happens. It will make good reading what you're able to gain from the filters you have,
But, like I said:
"PAIN!" Lots of it!
Malcom, brilliant suggestion NGC 2818. I managed this one from home last Saturday. Its glow is eerie. One of my favourite planetaries. The cluster/planetary double whammie of M46 is stunning too. All these lovely stars, and then there is this puddle. Really nice juxterposition.