I won't tell you to decrease your budget if that's how you're looking at it. I will tell you that you should have a lot of money left over afterwards. I've got thirteen skylights (because of course I do) and only two are active, but they're upstairs and they're great for moving hot air out of the house. Not sure it would matter that much to you but I recommend doing some cursory research before any purchase decisions.

And I'm not saying "get rid of the bamboo." I'm a big fan of bamboo, actually, and find that it's predictable and well-behaved within parameters, those parameters to include things like "will shoot runners clear under a sidewalk." What I'm saying is it's a grass not a tree and cutting it down regularly is good for its health. Check with your local of course but one of the things I've had difficulty letting go of from my desert upbringing is "green things like to grow." "Prune harder than you think" is perhaps a better way to convey my advice. You can wait until December or January to keep what you have but if you straight nuke it before February it'll be lush and green by April.

And I wouldn't necessarily drill through the countertop. Drill through the face of the cabinet below the sink. It should be 3/4" beech or whatever. Those pneumatic plungers are a pain in the butt to trigger accidentally.