Yes , it will be good to visit at that time. You can also do mcleod ganj and dharamshala sight seeing. cabs usually take 800-1000 for sightseeing including HPCA stadium, Nadi point,Church, Lake and Bhagsunag Waterfall. If you dont want to hire cab you can take bus or any other local transport.
You can walk to triund anytime of the year. The path is structured and well defined. You can do it in snow or no snow. Yes, Feb might be a bit tough though. Triund is mainly for trekking. You could include Mcleodganj also. You could also indulge in Para gliding .