Hi Woodwalker,
I haven’t used OurBodyCorporate, but our 14-lot building (in Sydney) has been self-managed for about seven years.
We’ve been using Urbanise, which is software aimed at strata managers, which is overkill. But having learned how to use it and paid the pretty high up-front cost for setup and training, we’re happy to stick with it. But I don’t think I’d recommend it to you, just because of the overkill.
I do like the sound of OurBodyCorporate’s different levels and would guess the admin support level is appropriate.
Although we don’t have a strata manager, we do use external building consultants and lawyers to support our self-management.
Good luck with it!