Okay, well there's a couple of things you may be interested in, at first they may not seem to be but I'll clarify after...
First, you may be like to find videos about Shona Banda on Youtube. She was diagnosed with Crohn's disease some time ago and was given all sorts of medications as well as had a number of surgeries. I believe at times she smoked/vaped cannabis for pain but didn't really start treating her condition properly with cannabis until it was considered terminal. She saw the video with Rick Simpson and at some point her husband noticed an oily residue in the vaporiser which they thought looked like the oil Rick Simpson made. Apparently she scraped this oily residue in to a capsule and started taking it three times a day with meals.
Second, you may also like to look in to Coltyn Turner. He was diagnosed with Crohn's disease as well and I believe his family moved to Colorado so he could access medicinal cannabis. I believe they tried a number of things which helped and they also tried a high (possibly almost purely) CBD extract, however, they found the best one was about a 1:1 ratio of THC:CBD. I think he takes capsules of this 1:1 extract 4 times a day.
So, why am I mentioning them in relation to MS and UC?
First, Crohn's has similarities with UC even if they aren't the same.
Second, it illustrates that just smoking/vaping may not be enough. I.e. for UC it may be necessary to take something more like a concentrated cannabis oil (CCO or Rick Simpson Oil or RSO) rather than smoking/vaping/edibles.
Third, it illustrates that while a lot of people mention high CBD I keep hearing that THC is important and other cannabinoids/terpenes will probably help as well. I think the best place to start is a 1:1 THC:CBD ratio and this may be useful for both MS and UC. For MS I believe Sativex has some success and it has a 1:1 ratio. Additionally, if you're looking for a high CBD extract I'd be looking for one derived from cannabis rather than hemp. I'm not sure I've worded that correctly, but what I mean is I'd be looking for something with a good cannabinoid profile and I get the impression that hemp derived CBD extracts are basically just CBD while cannabis derived extracts may have more cannabinoids/terpenes.
Overall, I guess what I'm getting at is that you may want to consider getting strains with a 1:1 ratio, or better yet a combination of strains that gives a combined 1:1 ratio, and make something like CCO out of them.
I saw someone mention taking THC and CBD separately and unfortunately I've heard some people suggest taking THC and CBD together while others suggest taking them separately. I'm not sure what's best, but I think taking the THC and CBD at the same time around meals three times a day is the easiest starting point. You can always try more complicated combinations and dosing if that doesn't work.
Oh, and before I forget, if either/any of these people are taking any medications you may like to check for interactions. For a start I believe CBD is a potent inhibitor of CYP3A4 enzymes (similar to grapefruit). There may be other interactions, that's just a start...
Out of curiosity, what strains are you growing or looking to grow for these conditions?