k_randomfactor, Nothing wrong with using the mountain bike, at least for the time being. I used my mountain bike for awhile despite no lockout for the fork and it was all good. I just prefer not to use a trailer and more importantly for me, prefer drop bars on the road.
If I'd continued to use the mountain bike I'd probably have bought another wheelset and mounted tires more suitable for the road to save wear on the dual pattern tires I use for off road.
Brad