Howdy Caleath,
Always good to hear about someone interested in Cowboy Action. I am not an expert by any stretch of the imagination, so I can't comment on a lever gun in .41. I don't remember hearing of one, bit I could be wrong.
Do you reload? I haven't priced 41 ammo, but I bet it is not cheap. I know factory loads for my .45 run about $17 a box. I usually use about 125-150 rounds for a match. That's $54 just for the ammo then match fee is usually another $10-$15. There are some exceptions, but most everyone I know reloads. It is just cheaper in the long run.
Don't worry about not having all your gear. If you show up to a match, most pards will be more than willing to loan you what you need. So, don't let that stop you.
As for the '97. Those 30" barrels are sweet. If you feel you need to go to a shorter barrel somewhere down the road, you can get a replacement from a couple of places. I would keep it just the way it is.
Sorry for rambling so much. I hope this helps!!