A stock 6 rib with a 1835 equals you climb nothing and never get to use 3rd or 4th gear of the trail. A five rib would suit you best. I am a water cooled guy so I am biased but it is hard to argue with an echotech or a Suby motor. Plenty of torque and HP at a lower cost than a total rebuild with $800 of heads $200 for cam, $200, for bearings, $600 to $800 for dual carbs and the cost of the frame rebuild to boot. An Echotech with computer and harness can be had for around the cost of a set of good AC heads maybe $500 to $600. You will need an adaptor $550 from Kennedy with flywheel, a radiator with fans for around $350 some assorted plumbing and frame modifications and you have a great running reliable rig that will pull that stock six rib in any gear. Oh and you can hold a conversation with the passenger driving down the trail.
Just a suggestion, I know to some purist this is blasphemy but there I said my piece. Best of luck with you project.
an 1835 makes plenty of power when built rite, we've all seen it..and you dont have to refinance your house, or stuff a radiator in it to do it 
. One word separates WC from AC, Longevity! 
Oh and did I mention horse power and torque for low $$$$$ just head down to Passat's and he will lead you to the nearest pull a part. 
.even with a cam swap I'd have my block checked and if I've got it that far I'd go ahead and cut for 94's.as far as building up your motor with running stock heads it will only give you so much and without doing an upgrade on them your really limited on what you can produce for torque and power.they are a lot of options for you but just changing carbs ain't an option.you will need to change from the stock cam and crank if you want low and top end.and for the cost difference I'd just stroke it and be done if your building a six rib.Chad