Here's my take:
You seem to know what you want and you have the means to get it.
I've seen a lot of potential gun owners paralyzed by indecision over a purchase. I admire that you come right out and say that you want a Python. I bought one recently, and it is just a fantastic piece...and YES, I most certainly shoot it on a regular basis.
If you can find a good Python to buy, then get it. If it doesn't meet your expectations, you can always sell it.
Success favors the bold. Get your Python.