William, February should be a great time to visit. Much too hot in the summer months to get out and walk the trails and that's what you need to do to really appreciate this Park. We couldn't have asked for better weather this past week. High seventies to low eighties during the day with upper forties each night. Not too hot for hiking and we only needed the furnace
the first thing each morning to take the chill off. We stayed one night at Rio Grande Village and three in the Chisos Basin. The nights were actually much warmer at the Basin campground. Check http://www.nps.gov/bibe/dailyreport/
for more details.
If you really want to be alone, there are thirtyfive or so remote sites scattered across the Park on the dirt roads. Check with the rangers for road conditions but we found at least at half dozen or so that we could have gotten the Scamp
into. We even met a Wrangler towing a tear drop camper along one of the roughest roads we drove on.
The three NPS campgrounds are in different environments and, schedule permitting, I'd suggest spending a couple of nights at each to get a better feel for the Park. We made the mistake of setting up in the generator
section at RGV and I didn't notice the 8K industrial genset the folks across from us had until they fired it up. What a racket! Besides, the sites are much more private in the 'no generator' section.
I wouldn't recommend the RV park unless you really want/need hookups. It looked like a parking lot with big motor homes and fifth wheels all lined up in a couple of rows.
As one of the rangers told us, 'Big Bend is a place some folks tire of in a few hours while others never want to leave and there doesn't seem to be any middle ground between these extremes.' Its sure worth a visit to determine which of these categories you fit in.
Al & Cindy