I have a budget of 1,500- 1,800 if necessary
MC has completely competent build techs. Fee to do it varies by how fancy you want it (like liquid cooling, etc). See the "custom build services" here: Laptop and Computer Repair Services - Micro Center
As for parts and such, you can say what you want to use the PC for, and whether you need all the misc parts like keyboard, monitor, etc?
Or if you stop by a store, the Build Your Own PC section of the store is where to go, just tell any employee there these things and that you want to use the build service.
Submit photos and a description of your PC to our build showcase
See other custom PC builds and get some ideas for what can be done
Services starting at $149.99
