They already have a surplus of $600 a month, or just over $7,000 per year.

If they absolutely had to, there could do a little less jet setting.  Travel and vacations are costing them $800 s month, or almost $10,000 a year.

There are a couple of other discretionary expenses in their list of costs too.

So, in a pinch, if they wanted to build up a reserved fund and give themselves a fortress level balance sheet after they buy the condo, they have some wiggle room.

The biggest concern I would have is the condo investment that will only give them $45 a month cash flow.  For the amount of money involved, that seems like an awfully small cash flow, and I think they could probably do better.