i've got one of those but i'm certainly not allowed to bring it indoors, mrs spotty would not be a happy bunny
i have lived in several share houses in the past that have had various 2 wheeled vehicles as indoor features though
as for club rego, be aware that Vicroads are just about to change the rules so that ALL bikes (and cars for that matter) will have to get a RWC as well as approval from the relevant club. this is not necessarily a bad thing as there are some right shitheaps getting about that got put on the road by a bunch of mates who got themselves registered as a club and approved all their own stuff with little or no safety checks. Vicroads have got sick of it and hence the RWC. its not retrospective
anyway enough of my ranting, i'm in the BSA club for the rego on the Vmax and i'll get the honda done through them too, they do have a tendency however to prefer people joining who have brit bikes ( i have a token BSA 250 which will never be put on the road), though in a purely practical sense, they'll take anyone's money. they've always required a RWC for club reg
you could try the VJMC http://vjmc.org.au/j25/ though they're not always that cuddly about custom stuff
then theres these guys http://ccjmc.net/ we went to their show last year, nice guys with a wide range of bikes who are open to all kinds of stuff
also worth thinking about is, if you're going to go heavily custom, build the bike fairly stock first to get it rego'd then do the custom stuff after, its a lot easier to get a stock(ish) bike RWC'd than something that may well be just as safe but looks 'unusual'
hope i'm not telling you stuff you already know but hope i've helped
cheers, spotty