I'd run the next cam up from that and a split duration unit at that. Look at the XE series cams. As far as those rockers are concerned, I've read good and bad. For double the price a nice set can be picked up from Comp or Huges engines. Superior tuff! 1.6 ratio if you wanted.
The intake is an old one. The Weiand Action plus is what I would be looking at.
Your also lacking compression. Look into pricing a head milling of approx. .060 IIRC .
Head milling is probably the cheapest upgrade. It can also be a pain in the *** if you go far with matching up the intake after the milling.
Combine these suggestions and it'll be a really nice power increase. And it'll still work with the stock converter and gear ratio.