Welcome to another 'jackeen'.
SlimTim ( a member on here ) is putting together his own RIB so it might be worth talking to him.
Other illustrious RIB builder members include Cookee and Kitten, Adam Younger (mainly race level ) and Tony Davis. They're all pretty generous with advice.
Worth talking to JWalker too, Pete 7, DaveManning and Daniel as well as Alan Priddy and more because they have done loads as regards RIB building.
That should keep you researching for days!
Us