In the event of default by any Tenant, every remaining signatory shall be liable for timely payment of rent and shall be bound by all the terms, conditions and covenants of this Lease Agreement whether or not they are in actual possession of the Premises.

That will put you leaps and bounds ahead of most other investors starting out.

As the buyer has to read the financials and the cc&r’s and agree in writing to be bound by them. 

We do this to mitigate the risk of loosing money.

Another point i'd like to make is you can make or loose money in any market.

And if I sell how do I not loose half to capital gains tax.

On the other hand just loosing a tenant every year and doing a turnover would pay for the cost of new windows but I'm just trying to see if that would even help solve the problem before I throw money at it.

With condos if the threshold of renters to owners gets too high they can shut down people being able to rent and they often do because they loose the ability for new buyers to get loans in the building if too many renters to owners. 

Did you loose my number?   

So long as you buy the property for what it's worth you can't really loose in the long run.