You'll have a much larger footprint affecting people in your current position than doing the ferrying/sales/training position. If that's one of the factors, you should consider this; you're working with good people now. As you ascend the ranks in the airlines, the quality of pilot gets better, which in turn, will make you better by being around them. You're better off learning from people greater than you than stepping down to help pull others up especially when you lose the ability to associate with people greater than you, which you will give up to some degree accepting this position.Plus, at least initially, my role in the company would be more with training the buyer who's already purchased an aircraft, rather than making the initial sale. I get a lot of satisfaction out of helping somebody use their plane safely and efficiently. Knowing a pilot will come home to their family at night as a result of the lesson I taught means more to me than shuttling people at an airline.
Again, keep the thoughts coming if you have them. Hearing all these comments has been helpful.
After reading the other posts, the pay isn't what it should be. I said the initial decision comes down to what makes you happy. After that the factors of life are important to consider. Money is one of those. I've never seen anyone really catapult themselves ahead by taking a pay cut. I'm talking large steps of financial gain. Going from 30 to 65 or 70+. Never seen it. It sounds like there are comps in the market for pay in this industry. Find those comps, and see if he will match them. THEN you'll have something to think about.