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. 

I knew the downsides of this type of investment but felt that our natural tendencies to over analyse everything needed to be combated by a swift decision and action. 

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.