@Account Closed regarding selling. If you do determine that the rental market supports it and decide to keep the house and rent it out, have you considered ways to access the equity you have instead of selling? Once you crunch the numbers on market rents, instead of cash flowing a couple hundred a month could you possibly re-fi or find a HELOC to put 20-30% down on another property that you could also fix/rent or flip if the market supports it?
If you could cash flow your current house ~$100-200/month after accessing equity (accounting for higher mortgage/loan payment), someone else would pay down your mortgage while you speculate that the DC/NoVA sprawl ends up creeping all the way to Front Royal in the next 30 years (it is definitely possible...) and drives the price up. If you secured another cash flowing property with the equity from the first, you'd be doubling down on that bet while hedging at the same time (cash flow).
Either way you win, unless you can find a better return on your investment by selling and re-investing your tax free capital gains elsewhere, OR... the US economy could collapse due to the financial ineptitude/corruption taking place w/in the beltway and it could be an all out Zombie Apocalypse headed your way!
It all comes down to doing the math, market analysis for rents and sales prices, financing or ability to access existing equity, jobs now and future job growth for renters within easy commute distance, increasing infrastructure between Front Royal and NoVA/DC for speculative significant appreciation, your investment philosophy (buy/hold vs fix/flip, desired return on investment, etc).
Best of luck and keep us here at BP informed of your decision and the results!
-Jeff