There are several different neighborhoods with varying rent prices and also varying year-to-year(YTY) rent increases.

Most likely she wants a two year lease to avoid a price increase, and is happy with where its listed at now. 

If you got a couple more quotes, it might really increase your cash flow. 

If you are going to rent the lot and buy the home you may find your expenses increase.

Will my property value increase?

Incomes have barely budged, and consumer debt is increasing again.Housing prices in North Las Vegas are rising so fast that many communities are no longer affordable.

It sounds like you have been preparing yourself by listening to podcast and reading to increase your RE IQ and now I believe the next step is to take action and buy something.

I was wondering how I'd cash flow if taxes increase to $18,000 ?.

I assume you are asking if it is better for you to #1 buy the property and evict the tenant and put in $10k in repairs to increase the rent or #2 just keep the tenant in there and put in few repairs and ride it out. 

pid=1563Houston Real Estate Highlights in August(* asterisk denotes that the “Harvey effect” has been removed): Single-family home sales rose 7.6 percent year-over-year, with 5,844 units sold*;Days on Market (DOM) for single-family homes declined slightly to 49 days;Total property sales jumped 36.8 percent, with 9,978 units sold;Total dollar volume increased 40.1 percent to $2.86 billion;The single-family home median price rose 3.0 percent to $236,870, reaching an August high;The single-family home average price also achieved an August record, rising 1.9 percent to $300,670;Single-family homes months of inventory was at a 4.1-months supply, down from 4.3 months last August and equal to the national level;Townhome/condominium sales rose 12.3 percent year-over-year, with 457 units sold in 2018 compared to 407 one year earlier*;Leases of single-family homes rose 7.6 percent with the average rent up 3.4 percent to $1,926*;Volume of townhome/condominium leases fell 8.6 percent with the average rent up 5.5 percent to $1,639*.