Newbie Kitchen Self-install or nah?

I am torn between DIY kitchen install or Traemand sub-contractor. I have a basic U-shaped kitchen footprint that is not changing. Literally just swapping out cabinetry,sink, and countertop. Appliances will be changed at a later date. I've put together many an IKEA furniture piece, as well as other similar types of products, but otherwise I am a complete DIY novice. How difficult would this be for me to install myself? Would I need any power tools of any kind? Something that comes to mind are the holes in the sink cabinet for pipes and such. My personal contractor wants no part of IKEA lol. Any advice would be great particularly from a fellow novice who was successful in this. Thanks

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