Transfer of Auslogics boot-speed and main question about my current laptop situation

Greetings Aus Q,

Go ahead and ding me if this is perceived as more than one question.

Currently, I'm using my old laptop with Win 7 and BIOS date October 2009, with 2 GB memory stick added for a total of 4GB. Over a year ago, I bought a Dell Inspirion 15 3000 (3565). Within the warranty period, on the 1803 or 1809 Win 10 update, something happened. Sent back to Dell, and got motherboard replaced and something else. Other issue was my display. Dell said I broke the display and would not fix it.

Money was tight and I could not replace it and went back to my current laptop on Win 7. I spend too much time trying to keep my Win 7 laptop running at a decent clip with the quality Auslogics boot-speed program.

A) I was surprised when I checked Amazon, they have a great price on replacement displays. If I could get a new display, add an extra 4 GB mem stick to give me 8 GB RAM, and research a compatible( or suggestions from you) quality SSD to rplace my HDD for under $200, or buy new laptop with the necessary chit for my sole proprieter business in the $400-600 price range; what would you do?

B) With Win 7 losing support in a month, and all the Win 10 update problems, I was thinking about transitioning to a Linux distro similar to Windows. Make sense from a security issue position?

C) Is it worth looking for a higher end almost new/used laptop on Craigslist or other avenue?

D) Also, my AUS b-s license, can I transfer it to my Dell or to the new pc?.

Thank you,

Jim Copeland