Nice instructions, I would go with an Ssd drive it will increase the speed a lot. Below are some different sizes and cost.
https://www.amazon.com/gp/product/B00OAJ412U/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=shs02e-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B00OAJ412U&linkId=5892985521008a12719edf3a810dfaef
https://www.amazon.com/gp/product/B01F9G43WU/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=shs02e-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B01F9G43WU&linkId=910d2ecd28f325ae198c9a9c14b32aca