Ask for a copy of the curriculum and the flight hours involved. For you as a new pilot, this might be okay as long as the cost per hour is reasonable. Remember, Part 141 is a program that has an FAA approval stamp on it and very little variance from the approved program is allowed. So if the program says X hours to train you for an instrument but you are ready at 5 hours short of X (but still meet the required experience minimums), you will still need to fly off the remaining hours the curriculum requires.
When I made a similar inquiry to a local academy to get my CPL done, I was told the part 61 is a better fit for me. The logic for that answer was that the 141 curriculum included the flight time required to get the student to and beyond the 250 hour mark. My current 450 hours made that 141 curriculum not a good idea since the extra hours in that curriculum were not necessary.
Another question for the 141 school and your long term goals is in what equipment for the CPL. Since I have my eye on pro pilot and maybe the regionals, we will be doing the commercial as multi engine first and the single engine shortly there after.
Next comment about the 141 is the weekly commitment. Many schools are full time. Others are "most time", 3 maybe 4 days a week for 5 to 7 hours each training day. In either case, how are you set financially if you must focus on flight training versus your current employment?