39 here. Just finished my PPL and starting my ATPL theory. My school has been fantastic. Did my PPL in 47 hours with zero knowledge. Quicker than a lot of the kids at my place so don't let age put you off. If you have the ability you have it. One thing that is for sure you are going to have to want it. My life over the past 8 months has been nothing but aviation. Even on my work breaks I have had those books open.
My advice would be to get him some lessons and see how he gets on. I have no idea of your financial situation but for someone in your husbands position something like the speedbird academy ends up being hugely expensive as you cannot work for two years. Plus you have to fund it and before you know it you have "spent" a quarter of a million getting your licence. Even if you get into the "free" course you still have loss of earnings over two years and start on a lower salary. Going the modular route you can do it for a fraction of that whilst still being able to work. Even going the modular route you can still get it done in good time. I plan to be finished in a little over two years.