cnowak:
Another thing I am confronted with is the sails the kit provides paper sails but I think that would look terrible.
If there will be plastic sails, like on Revell's or Airfix's Cutty Sark, there will be more terrible look... You can make by yourself cloth sails or make model without sails.
As for rigging - George Campbell's plans are wery good source, but i don't imagine, that You can use them in "full power" at the scale 1:180.
I have both Revell 1:96 and Airfix 1:130 kits and can scan rigging instructions, but in both cases rigging instructions are not accurate and simplyfied; in other hand - you are building model in scale 1:180, so Airfix instructions should be sufficient, i think.
Let me know, do You want them scanned.