Do what you want, but if you ordered 1st of June (or any time around then) you knew you weren't getting the gimbal with it. From that point there has been one 3 week delay.
As far as the gimbal goes as a tool, it works well. As for Solo, it is the most flexible platform out there, and the PixHawk2 is new, so support will exist for a long time. There are already numerous people adding to it with various gimbals, lidar, loggers, etc. and that has just begun.
The Solo however is also new, and so anyone wanting a tightly integrated (and closed) system with everything released on day one, simply has the wrong thing.
There are trade offs to everything though, and with a closed system you get what you get. For the most part, if the manufacturer doesn't make or support an add on, you don't get it.
As for me, I also do video exclusively and have two, one with gimbal, and one impatiently waiting for one. I also have a P3P (purchased previously) that has been down for 8 weeks getting repaired (stress cracks) and will come back this week.
I see value in both, and am happy to have a usable unit and a backup on the way. Now that I see what the gimbal can do (I actually had little doubt before) I am placing new bets on Solo.
Again, do what makes you happy. In the end it is your choice. But rest assured, the Solo and 3DR will do very well, and their biggest problems right now are incredible demand. I seriously doubt that will change.