That is a hearing aid name I haven’t heard in the 8-9 years… Great hearing aid in its time.
Based on what I have read, it seems this is your first go at hearing aids… and you want to try self programming? Without doubting your skills in any way, I think this is premature.
When you consider that there will be follow ups and the such, $250 is not that much money for your overall benefit. Keep in mind, that these hearing aid do have the capability of being set too loud which could result in permanent hearing loss.