[Edit: Sorry guys, I thought I was on the "Post something that made you unhappy" thread. My bad
]
That's actually a pretty good idea, pal.
Those seats with adjustable height might be good for you. I know it's a pretty common example but they get the job done.
As for the table... There are the ones that are used for electronic pianos. Mine's got a handle and you can easily adjust the height without needing to play with your chair. It'd be a "DIY" table, yeah, but maybe it can work.
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"Shirahoshi: "But if you're a pirate, Luffy... Then aren't you a bad person?"
Luffy: "... Hm? ... Mmmm... I dunno, that's up to you to decide."
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Moo approves!