I'm thinking of creating an aerocloner.
I do not have the rootstock to graft all the varieties I want and frankly I'm nervous of grafting as I've never done it.
I don't do much grafting. I mainly do chip budding and t budding which are much simpler.
I have also used grafting machines, and found them quite useful.
They are relatively inexpensive on Ali Express. Along with budding knives and tape.
You still need some skill in working out where to make the cuts and using the budding tape.
That comes with practice. You need to get your eye in, as they say and that only comes with repeated attempts.
Same with using the tape, after a while it becomes automatic.
Things are much simpler since Buddy Tape and Para Film ( nursery type ) came along.
I suggest growing out some Citrus seed like lemon or valencia orange or tangelo, and practice on them.
You can just graft a scion from each seedling back to itself for practice. Or cut a bud stick from one seedling etc.