First time builder, budget of ~900$ CAD for mainly gaming rig.

What will you be doing with this PC? Be as specific as possible, and include specific games or programs you will be using.

Gaming, surfing the web, word processing/spreadsheets.

What is your maximum budget before rebates/shipping/taxes?

Probably about 1000$ CAD.

When do you plan on building/buying the PC? Note: beyond a week or two from today means any build you receive will be out of date when you want to buy.

ASAP

What, exactly, do you need included in the budget? (Tower/OS/monitor/keyboard/mouse/etc)

Don't need a monitor, keyboard, or mouse. Will need to budget for OS and an optical drive.

Which country (and state/province) will you be purchasing the parts in? If you're in US, do you have access to a Microcenter location?

Purchasing in Ontario, Canada.

If reusing any parts (including monitor(s)/keyboard/mouse/etc), what parts will you be reusing? Brands and models are appreciated.

An Acer monitor, keyboard, and my corsair mouse.

Will you be overclocking? If yes, are you interested in overclocking right away, or down the line? CPU and/or GPU?

Nope.

Are there any specific features or items you want/need in the build? (ex: SSD, large amount of storage or a RAID setup, CUDA or OpenCL support, etc)

Include an SSD for the OS.

Do you have any specific case preferences (Size like ITX/microATX/mid-tower/full-tower, styles, colors, window or not, LED lighting, etc), or a particular color theme preference for the components?

No case preference.

Do you need a copy of Windows included in the budget? If you do need one included, do you have a preference?

Yes I need a copy of windows included in the budget.

Extra info or particulars:

I'm not very biased in the AMD vs. Intel/ Nvidia vs. AMD debate so feel free to include whatever CPU/GPU you want. Thanks for helping me out! Looking to get the highest gaming performance out of my budget, and I've found so many different configurations on related sites that I'd see what other people say.