Hi Mark,
You can add the right angle finder coupled with the RDF! Many folk do this. The finder is way, way wider field of view than the widest field possible with your scope, and will allow a really good finer aiming at faint objects which have faint stars surrounding.
I do something similar with using a 3" reflector as my fine magnified finder. I mount it onto my 17.5" dob.
You might also like to look at what I did to help finding stuff with your charts and finder combination:
http://www.iceinspace.com.au/forum/s...ad.php?t=53378
Mental.