My advice would be to FORGET VINTAGE TRUMPETS at your stage of development. Generally, we need a primary instrument that blends well, is in tune and has an easy blow. Vintage trumpets mostly sound different, might not even be optimally in tune (many were built for a lower pitch than common for today) and could even be an issue for getting into ensembles. In addition, old trumpets are exactly that - old and unless they have been fully restored, you may have mechanical issues.
You will do yourself a great favor by saving up and getting one of the more "standard" models: Yamaha 6xxx, B&S Challenger, Jupiter, Bach 180, Getzen 900. You will be rewarded with an instrument that will not be in the way later in your "career". The problem is that players get passed over because of their instruments not "blending" - without anyone telling them. I have a Bach C trumpet for ensembles that "prefer" that standard sound - even although it is not my favorite instrument. I would rather keep the gig instead of "proving a point" where only I lose.
That being said, once you have a solid every day "go to" instrument, additional horns can increase the available colors. If you are into jazz, there is more room for "individuality" after you have found your own voice