You can set up a profile for the DCS A-10C and assign that profile to the sim title in the Track IR software. (Sounds like you know this.)
I recommend using the Track IR software to tweak your profile curves. Make sure the Track IR 'sees' your reflectors in the center of its grid.
I did not need to do anything within the DCS A-10C Options for my Track IR.
Here is a post on the curves I found helpful -http://simhq.com/forum/ubbthreads.php/topics/3171177/DCS_A10C_Warthog_A_TrackIR_Pro.html#Post3171177
For 'locking' a view position, I use my mouse's thumb buttons for Pause and Center. I can 'lock' my view with mouse aft thumb button.