Good morning Lawrie,
welcome to Paddleducks - It's great to hear that your giving a paddle steamer a go! Making the paddlewheels is the major thing that puts most people off building a model paddler, but they aren't as difficult as you first think, yes it takes a bit of patience and care, but they are within the skills of most modellers.
Please post a few pictures of your progress in the build areas of the forum, I'm sure lots of us would like to see your progress, and it's always there as a pictoral record of your build later - Plus you can ask for any help and advice you may need if it's required.
Looking forward to your next posts....
Regards
Eddy