Unity to unity pro

I have been working on a project and I am thinking about upgrading to unity pro, is this hassle free as I’m in a project about 10% and don’t want to start over. Also is the jump worth the 1500 and how much editing will I have to do to port the game to iOS.(I have been focusing on pc and have little knowledge of other platforms.Lastly, the game is closest to uncharted.I have put a lot of work in the project and believe it is looking good.(doesn’t any developer!?)

There’s no hassle since there’s no actual upgrade; Pro is just a different license, not a different app. As for being worth $1500, only you can answer that. The effort for porting to iOS depends on your game; in the best case you’d just have to rewrite the input code.