Sell your existing components besides the PSU and build new. The net cost will probably be around $1,000 CAD. I looked at an i7-7700K, RTX 2070 and 16GB RAM upgrade. The gross cost of the Intel upgrade is a little lower but I think the net cost after component sale will be about the same or a little lower with Ryzen. Plus you will have a new motherboard with tech updates, new and faster CPU, future CPU upgrade path plus a new and superior heatsink.
PCPartPicker part list /
Price breakdown by merchant
CPU: AMD - Ryzen 5 2600 3.4 GHz 6-Core Processor ($229.44 @ Amazon Canada)
CPU Cooler: Noctua - NH-U12S SE-AM4 CPU Cooler ($79.95 @ Newegg Canada Marketplace)
Motherboard: Asus - Prime X470-Pro ATX AM4 Motherboard ($216.99 @ Mike's Computer Shop)
Memory: Corsair - Vengeance LPX 16 GB (2 x 8 GB) DDR4-3200 Memory ($159.99 @ Newegg Canada)
Video Card: Zotac - GeForce RTX 2070 8 GB AMP Extreme Video Card ($619.88 @ Canada Computers)
Power Supply: EVGA - SuperNOVA G3 550 W 80+ Gold Certified Fully-Modular ATX Power Supply ($99.99 @ Canada Computers)
Total: $1406.24
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2019-02-07 12:53 EST-0500
$1,000 will get you just an i7-7700K and RTX 2060. If you must keep it under $1,000 without considering the resale value of current parts. I'd suggest 16GB of RAM and an RTX 2070. Although an i5-6500 isn't enough to keep an RTX 2070 fed in many games. You can then save for a grossly overpriced i7-7700K or wait for Ryzen 3.
Update: Here is a $1,000 option.
PCPartPicker part list /
Price breakdown by merchant
CPU: AMD - Ryzen 5 2600 3.4 GHz 6-Core Processor ($229.44 @ Amazon Canada)
CPU Cooler: Noctua - NH-U12S SE-AM4 CPU Cooler ($79.95 @ Newegg Canada Marketplace)
Motherboard: Asus - PRIME B450M-A/CSM Micro ATX AM4 Motherboard ($101.50 @ Vuugo)
Memory: Corsair - Vengeance LPX 16 GB (2 x 8 GB) DDR4-3200 Memory ($159.99 @ Newegg Canada)
Video Card: Zotac - GeForce RTX 2060 6 GB GAMING Video Card ($449.99 @ Mike's Computer Shop)
Total: $1020.87
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2019-02-07 13:17 EST-0500