Re-Modelling Vostro 3668 as a learning tool

I want to try learning PC building and thought this would be a starting point. 

I found a seller with Dell Vostro 3668 and after I looked over the Dell's website, owner's manual: 

https://www.dell.com/support/manuals/en-us/vostro-3667-desktop/vostro%203667_3668_om/technical-specifications?guid=guid-79ed71c8-fc0e-46e4-84d5-aab28fb60e52&lang=en-us

I thought, can I upgrade the components? 

Here is the base specification of the seller product's:

PC Dell Vostro 3668 Core i3 7100, Memory DDR4 4GB, Hardisk (HDD) 500GB Power Supply 240w

I want to upgrade them into: 

• Intel 7th Generation Core i7-7700
• RAM Crucial 16GB Kit (2 x 8GB) DDR4-2666 UDIMM CT2K8G4DFS8266
• VGA Low Profile / Mini ITX GTX 1050 Zotac 2GB 128Bit GDDR5 (OR) Asus GTX 1050 2GB GDDR5 128bit 
• Hybrid storage
  • V-GEN PLATINUM 128GB SATA 3 (OR) SSD 128GB RX7 SATA 3 with an installed HDD 500 GB from seller
• Should I change the power supply? The seller set up a 240w power supply.

I wonder if it will work. Any recommendation?

Thanks