I've got a parcel of land and an option on the neighboring parcel that would allow ~100 beds based on getting rezoned to multifamily.  

We opted to make this a top-line property so we put granite countertops, SS appliances, hardwood floors and all new mechanicals, plumbing, and electrical.All 4 units have identical 2 bed 1 bath layouts but each has a slightly different color scheme in the kitchen and bathroom to appeal to different tenant interests.  

Recently bought a 4 bed 2 bath in a reasonably nice Mesa AZ neighborhood for $100 down and took over the mortgage.

Bed bugs are incredibly awful.  

I put them in the living room and the master bed.4.

Or, maybe some kind of in-between could be reached, e.g. we purchase a 2br/2bed SFH and rent out one bed/bath, so that our mortgage is at least offset, and our payments are going to equity rather than rent. 

I just bought a 3 bed 2 bath house for $67k that will rent for $1000+ and i found it on the MLS.

Market rent potential is conservatively $750 each with much of the neighborhood averaging $850 for similar Bed/Bath sq ft.Comp average is dragged down because of two recent large purchases in the area of 20+ duplexes at a time resulting in 4 larger duplexes in the vicinity sold for 119k.

First, I'd make sure the professional you are hiring meets the EPA guidelines and recommendations for bed bug professional treatment.

Let me rephrase this....put the monkey back on her shoulders (so to speak) by telling her that her failure to pay her entire share of her rent will force you to address the issue of initiating the process of eviction because of this.Thus it becomes her choice if she wishes to continue this behavior because of a really stupid and childish situation.Don't you wish you come sometimes send tenants to bed without supper or TV?