I don't think it's too late and I do think getting a PPL is your best first move. I agree that it's best to get as much information as you can before you part with any cash.
Get your class 1 medical before you start and if you can, visit a few flying schools that provide professional training so that you can get a feel for what you are letting yourself in for. Most have weekend seminars and in my experience, you ca always arrange a visit at other times.
I'm in the middle of my IR training right now but started in exactly the same way that you are considering. The most important advice I was given is NOT to hand over large sums of money in advance for training. Students have lost vast amounts of money when their flying school went out of business. It may cast a bit more but it is safest to pay as you go.
Be prepared for a lot of work but above all, enjoy yourself!
AP