Hi. I personally would not get a 1000ws Hensel unless you really feel you need that power. I can go outside with a Hensel Integra 500 Pro Plus and a Hensel 22-inch beauty dish and still over-power the sun with flash, though I'm sure a 1000WS makes it easier. Keep in mind, all Hensel lights are labeled with "real" not effective watt-seconds, so if you're used to using cheaper lights, you might not realize that when Hensel says, "1000 watt-sconds" you are in fact getting 1000 and not half or less of that.
To clarify, I own a bunch of Hensel Integra 500's as they are great for accent lights, hair lights, background lights, etc., and even for my main and sometimes if I elect fill or kicker lighting. I have two Hensel 1200WS Ringflash units with 3 Hensel Porty Premiums battery packs with extra EHT1200 flash heads--but I need that type of fire-power when doing workshops and elaborate shoots.
I also have two Vela systems that I'm trading in for the new Hensel systems coming out this year that give the Dyna-Lite DR1000 a run for their money, not to mention Hensel's new battery pack is coming out too that will run a bunch of stuff on location including their 500's.
While many will argue about lights when it comes to brand, I look for ease of use and accuracy so I can work efficiently and smarter--any seasoned pro can take any brand of light and make it work, but top pros know how to work smart with the right tools for the right job.
I will say, you're on the right track for lighting, I hope that helps, wishing you the best, rg sends!
(One Hensel Integra 500 Pro Plus w/Hensel Beauty Dish and a Hensel fired fireplace with Hensel Logs and Hensel Gas, model wearing Hensel Skin and Hensel jewelry--the scrunchie on her wrist is not by Hensel, it's by mistake, but I still like it cause it's my mistake and it will come up upon publication) (grin)
Re: getting a third hensel