

What do you think.
I have had this desert rose for 16 years and I'm only just recently hearing about lifting the plant to expose more caudex. I haven't really researched it very much until recently but every summer it explodes with flowers and just seems really happy. I am emotionally attached to this plant lol however I am wondering a couple of things.
I want to repot and possibly do a lift. What would be the best substrate mix and should I get a more shallow pot or something like what it is in. Should I wait for a different time of year to repot? Should I lift it?
Second thing: it was pruned when I bought it which you can see in the second picture and then it took a tumble a few years ago and lost a branch but I'm thinking of possibly cutting where it was originally cut and trying to graft on some branches that I prune in the spring. Is that a bad idea?