Don't have a solution to the ownership issue, but a couple anecdotes:
1) Drove by a few acres of nice cleared fields; good soil, easy road access, 10 mins from Duncan on Vancouver Island. Was with an experienced farmer from the area, and she commented that the owner kept trying to rent this land to new farmers, but was asking the 'outrageously high' sum of $150/acre per year, and thus having no luck. Now, I don't think there was any expectation that the renter would be living/building on this land, but I'm not sure which way that would move the price...
Are you sure that $150/acre was per month? Sounds completely insane! On a 60 acre property that would equate to $108,000 per year!!
Don't know where exactly your property is, but I do see remote acreages, often old homesteads, with a dwelling, come up for rent now and then. Usually on the islands. Cheap prices, due to the inconvenience factor of being somewhere relatively out of the way. Somewhere between $600 to $1600/month, though I can't say I recall any being as large as yours.
2) I know of two people who have built a house and otherwise improved a property that they did not own. In both cases, the exchange was pretty complicated, but in rough outline:
-Tenant got to live on the land for a long while, ~15 year range. No rent, or a work exchange of some sort beyond the homesteading/housebuilding.
-Property owner keeps house/improvements when term ends. In one case, property owner agreed, pre-construction, on an amount to pay for the house. I think in the other case no payment was made either direction.
Seems like you'd need a very good relationship between the landlord/tenant, as writing and enforcing a contract to cover all the possible issues in this sort of setup would be a real pain. As you say, you need a way to kick off a problem tenant, but the tenant needs a way to be confident you(or your heirs) won't suddenly
boot them off as soon as the house is done...
Out of curiosity, where in BC is your land?