nac
Aspiring Novelist
1600/2600 will outperform 7700 but at cheaper price point.Core i7 7700 7th gen - 18500
MSI B250M Bazooka Plus - 7500
Cooler Fan - 400
Samsung 8x2-16GB Heat sink Ram - 7500
Toshiba 256GB M.2 2280 SSD - 3200
You can get similarly priced NEW motherboard
For your use case, you wouldn't be needing 16 gigs of memory, esp. now when you don't have a dGPU.
Get a good SSD, Samsung 860EVO.
710 1gb version for 2.5k
Assuming you will buy something like 1060 in the future, a good PSU and a decent cabinet would bring the total around 40k.
BTW, that 40k is new budget or including graphics card?