I suggest you take a look at the middy/30 plus robo chair. It’s very comfortable and you can also get add-ons for them. However only the middy star-grip systems fit which atm are extremely hard to get hold of.

When you buy the chair you get 2 or 3 star-grip systems which clip on the legs of the chair, a side tray, a back rod rest which can tilt all ways and also a feeder arm which is very long and again can move all directions. You also get 3 middy bait boxes with the package, I don’t think i have missed anything else, hopefully. Price is £120. Seems expensive but if you were to buy a standard korum chair and buy all the add-ons seperately they are roughly the same price.