Just dusting the cobwebs off this one for you @Jinxter
Having sold a truck load of Inspire kit a few months ago it’s very difficult to price as a job lot.
What I did was to scan eBay for the individual items that have sold over the last six months to get the average selling price. Then add them all up and then stick a substantial bulk-discount on top. In my case I took £800 quid off the value of the combined items. I was also very open with my pricing in order to highlight just how much of a bargain / deal it actually was. Have a read of my pricing details at the bottom of this post: For Sale: DJI Inspire mega bundle - new details, new items, new price! [SOLD]
Not want you want to hear, but the problem you’ll face when selling is that its simply too much kit (and too specialised) for someone to buy 
Professionals who are using this level of kit will already have it, and Prosumers simply won’t want it. Despite the X5 camera still blowing even the new Mavic 3 out of the water 
My advice from recent experience would be to split it. It’ll take longer to sell but you’ll get so much more money for it.